Fait général: 1323 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fait mathématique: 1323 is a boring number.
Culture générale: 1323 is an unremarkable number.
Date historique: August 15th is the day in 1965 that the Beatles play to nearly 60,000 fans at Shea Stadium in New York City, in an event later seen as marking the birth of stadium rock.