Fatto generale: 5723 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 5723 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 5723 is an uninteresting number.
Data storica: September 1st is the day in 1920 that the Fountain of Time opens as a tribute to the 100 years of peace between the United States and Great Britain following the Treaty of Ghent.