Hecho general: 81374 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 81374 is an uninteresting number.
Trivia: 81374 is an unremarkable number.
Fecha histórica: October 17th is the day in 539 BC that Cyrus the Great marches into the city of Babylon, releasing the Jews from almost 70 years of exile.