What is the maximum value for an int32?

If you think the value is too hard to remember in base 10, try base 2: 1111111111111111111111111111111

if you can remember the entire Pi number, then the number you are looking for is at the position 1,867,996,680 till 1,867,996,689 of the decimal digits of Pi

The numeric string 2147483647 appears at the 1,867,996,680 decimal digit of Pi. 3.14......86181221809936452346214748364710527835665425671614...

source: http://www.subidiom.com/pi/

The most correct answer I can think of is Int32.MaxValue.

It's 2,147,483,647. Easiest way to memorize it is via a tattoo.