Fatto matematico: 2973 is a value of n for which n and 5n together use each digit 1-9 exactly once.
Trivia: 2973 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: February 20th is the day in 1991 that a gigantic statue of Albania's long-time leader, Enver Hoxha, is brought down in the Albanian capital Tirana, by mobs of angry protesters.