Hecho general: 29811 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 29811 is a boring number.
Trivia: 29811 is an unremarkable number.
Fecha histórica: August 13th is the day in 1968 that Alexandros Panagoulis attempts to assassinate the Greek dictator Colonel Georgios Papadopoulos in Varkiza, Athens.