November 2011 Fiendish Function

The Fiendish Function posed during November 2011 had the following sample guesses and replies:

• GUESS
• REPLY
• 1
• 1
• 2
• 8
• 3
• 72
• 4
• 46
• 5
• 521
• 10
• 1

The rule was: "Cube the number, then reverse the order of the digits".

Suppose the guess was 11:

• Cube the number, giving 1331.
• Reverse the order of the digits, giving 1331.

So the result is 1331.