Former President Donald Trump and New York Attorney General Letitia James, in separate media appearances, addressed the ruling Friday evening, trading barbs while reacting to the judgment.

Speaking from his Mar-a-Lago estate in Florida, Trump said he had to pay a fine for "having built a perfect company." Accusing both James and Judge Arthur Engoron of being politically motivated, Trump denied committing any fraud and said he plans to appeal.

20:02

Trump responds to ruling: 'A crooked New State judge just ruled I need to pay a fine'

Meanwhile, in New York, James lauded the ruling as a victory for all Americans and the principles of equal justice under the law -- saying "former presidents are no exception."

"The scale and scope of Donald Trump's fraud is staggering -- and so, too, is his ego and his belief that the rules don't apply to him," she said.

James also heralded Judge Engoron's penalties as effective remedies to "ensure this fraud cannot continue."

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Letitia James delivers remarks after Trump ruling

Based on Friday's decision, former President Trump and his co-defendants will likely owe $463.9 million based on their initial fine and the prejudgment interest imposed by the court, according to a representative for the New York attorney general.

Trump himself will likely owe $453.5 million, between his $354.86 million fine and $98.6 million in interest.

The amount of interest owed by the defendants is set to increase every day they do not pay the fines.

New York Attorney General Letitia James, whose office brought the civil fraud case against Donald Trump, described the ruling as a "tremendous victory for this state, this nation, and for everyone who believes that we all must play by the same rules -- even former presidents."

“When powerful people cheat to get better loans, it comes at the expense of honest and hardworking people," James said in a statement. "Everyday Americans cannot lie to a bank to get a mortgage to buy a home, and if they did, our government would throw the book at them. There simply cannot be different rules for different people."

The former president is "finally facing accountability for his lying, cheating, and staggering fraud," she said.

In addition to the fines imposed on Donald Trump and his co-defendants, the judge's decision leaves the Trump Organization in a constrained position to continue operating their New York-based businesses.

While Judge Engoron backtracked on his September summary judgment ruling -- vacating the part of his order that canceled their business certificates -- Donald Trump and his sons are temporarily unable to lead their namesake company. Trump faces a three-year ban on serving as the leader of a New York company, and his sons face two-year bans.

An independent monitor will continue to oversee the company's finances for at least three years, and the company needs to install a director of compliance.

Regarding the combined $364 million owed by the defendants, experts who ABC News spoke with believe it is unlikely any of them foot the bill immediately; instead, they can cover the fine with a bond while they appeal.

An attorney for Judge Arthur Engoron also filed in support of the gag order in Donald Trump's civil fraud trial, arguing that violent threats have increased since the gag order was lifted.

The limited gag order, which prohibited Donald Trump and his attorneys from publicly commenting about Engoron's staff, was issued by the judge last month after Trump posted about the judge's law clerk on social media. Judge David Friedman of the appellate division's First Department stayed the order on Thursday, citing constitutional concerns over Trump's free speech rights.

Engoron's filing includes a report from Charles Hollon of the Judicial Threats Assessment Unit of the New York State Court System's Department of Public Safety. According to the report, Engoron and his principal law clerk, Allison Greenfield, have been inundated with credible, violent and antisemitic threats since Trump began criticizing Greenfield.

"The threats against Justice Engoron and Ms. Greenfield are considered to be serious and credible and not hypothetical or speculative," Hollon wrote in the report.

Greenfield has been the victim of daily doxing of her personal email address and phone number, receiving dozens of calls, emails and social media messages daily, according to Hollon. Approximately half the harassing messages have been antisemitic, according to Greenfield.

In the report, Hollon wrote that Engoron was the subject of credible threats before the trial had started, but Trump's Oct. 3 Truth Social post directed at Greenfield exponentially increased the number of threats directed at her.

The report included multiple examples of voicemails that were left on the telephone in Engoron's chambers.

Hollon said the messages have created an "ongoing security risk" for Engoron, his staff and family, but that the gag order had been effective in lowering the number of threats.

"The implementation of the limited gag orders resulted in a decrease in the number of threats, harassment and disparaging messages that the judge and his staff received," Hollon said in the report. "However, when Mr. Trump violated the gag orders, the number of threatening, harassing and disparaging messages increased."

Engoron's lawyer, Lisa Evans, said the threats detailed in Hollon's affirmation justify the gag order, which functions as a reasonable limit on free speech.

"The First Amendment does not prohibit courts from limiting speech that threatens the safety of the court's staff," Evans wrote.

Trump's reply to the filing is due on Nov. 27, after which the First Department will decide whether to fully lift the gag order.