NEW YORK (AP) _ Simon & Schuster is negotiating with Fidel Castro about bringing out books by the Cuban premier, the publisher's spokesman said Monday.

Peter Minichiello, vice president for corporate communications, declined, however, to comment on reports that Castro had signed a $1.3 million deal for three books.

''We have no idea where that story came from nor the dollar amount,'' he said. ''All that I'll confirm is that we have indeed been talking to Castro about a number of publishing projects. More than one.''

He said the negotiations had been going on for a few months between the Cuban leader and Alice Mayhew, Simon & Schuster associate publisher and executive editor.

U.S. News and World Report said in its current issue that Castro had contracted with the publisher for a book about economics and the Third World, another about religion and a third volume about which there were no details.