I learned the interesting fact the other day that any natural number, however large, can be written as the sum of at most three palindromic numbers. For instance, 7369 = 7227+131+11.
Can you write the ten digit number 7,275,640,031 as the sum of three palindromic numbers?
Single digit numbers count as palindromes (eg, 7) but numbers with leading zeroes do not (eg 0330).