31 squared

31² = 31 × 31 = 961

To square a number, multiply it by itself. 31 squared is written 31² or 31^2, and the answer is 961.

How to work out 31 squared

Direct: 31 × 31 = 961.
From the previous square: 30² = 900, and 31² = 900 + (2 × 31 − 1) = 900 + 61 = 961.
Split the number: 31 = 30 + 1, so 31² = 30² + 2 × 30 × 1 + 1² = 900 + 60 + 1 = 961.

Related

31 cubed = 29,791
The square root of 961 is 31, so 961 is a perfect square.

Squares near 31

Number	Squared
27	729
28	784
29	841
30	900
32	1,024
33	1,089
34	1,156
35	1,225

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