Fait général: 16723 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 16723 is an uninteresting number.
Culture générale: 16723 is an uninteresting number.
Date historique: October 13th is the day in 1332 that Rinchinbal Khan, Emperor Ningzong of Yuan becomes the Khagan of the Mongols and Emperor of the Yuan Dynasty, reigning for only 53 days.