Hecho general: 2305 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Hecho matemático: 2305 is a boring number.
Trivia: 2305 is an unremarkable number.
Fecha histórica: April 23rd is the day in 1990 that Namibia becomes the 160th member of the United Nations and the 50th member of the Commonwealth of Nations.