Fait général: 19931 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 19931 is a boring number.
Culture générale: 19931 is an unremarkable number.
Date historique: July 26th is the day in 1509 that the Emperor Krishnadeva Raya ascends to the throne, marking the beginning of the regeneration of the Vijayanagara Empire.