Batman: Arkham Collection

I have an extra key. First person to guess the number I'm thinking of 1-1,000,000 wins!

Hint- strong

another hint- divisible by 9

Another-nother hint- the number of times that it is divisible by 9 is no greater than 1,000

u/CruelWorld1001 has guessed the number 333!!!

thank you everybody for playing I had lot of fun and hope you did too

p.s.- my logic on the first hint "3. triangle. triangle strong. 333 many 3s, many triangles. very strong."