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.

The sworn testimony of former President Trump in court yesterday was "hollow and untrue," according to a written order issued today by Judge Engoron.

The order, which memorializes yesterday's ruling that Trump violated the case's limited gag order, offers a stronger repudiation of Trump's sworn testimony than the judge articulated yesterday, when he called Trump's testimony "not credible."

"I then conducted a brief hearing, during which Donald Trump testified, under oath that he was referring to Michael Cohen. However, as the trier of fact, I find this testimony rings hollow and untrue," Engoron wrote in his order.

Like his in-court statements yesterday, Engoron remarked that Trump's hallway statement about "a person who's very partisan sitting alongside him, perhaps even more partisan than he is" was inconsistent with how Trump frequently refers to Cohen. Going as far as to cite the Oxford English Dictionary, Engoron wrote that "alongside" is more likely to refer to his clerk than the witness, who sits below the judge.

"Using imprecise language as an excuse to create plausible ambiguity about whether defendant violated this Court's unequivocal gag order is not a defense; the subject of Donald Trump's public statement to the press was unmistakably clear," Engoron wrote.

Trump's lawyers said they plan to appeal the order.