At what temperature do e-books burn?

Simon & Schuster have just announced that Ray Bradbury’s Fahrenheit 451 is now, for the first time, officially available as an e-book. The 1953 dystopian novel is about a future American society where reading is outlawed and firemen start fires to burn books. Fahrenheit 451 is the temperature at which paper (ie books burn). I wonder at what temperature a Kindle burns? Perhaps Bradbury should rewrite the story, so a new generation can appreciate it on a Kindle Fire.