Hecho general: 91238 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 91238 is an uninteresting number.
Trivia: 91238 is a boring number.
Fecha histórica: October 19th is the day in 1950 that the People's Liberation Army takes control of the town of Qamdo; this is sometimes called the "Invasion of Tibet".