Hecho general: 2321 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 2321 is a Huay rhombic dodecahedral number.
Trivia: 2321 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fecha histórica: May 9th is the day in 1904 that the steam locomotive City of Truro becomes the first steam engine in Europe to exceed 100 mph (160 km/h).