224

This number is a composite.

The number 224 times its reversal, {+3, +1} are twin primes. [Patterson]

The only 3-digit number that creates a non-titanic prime of form x^x + 1 - x!. [Loungrides]

One Hundred and Eleventh Congress (First Session) House Resolution 224 (Supporting the designation of Pi Day, and for other purposes) is dated March 9, 2009. Coincidentally, it's the birthday of Chess World Champion Bobby Fischer.