Fatto generale: 23671 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 23671 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 23671 is an unremarkable number.
Data storica: October 21st is the day in 1973 that John Paul Getty III's ear is cut off by his kidnappers and sent to a newspaper in Rome; it doesn't arrive until November 8.