Square Root Calculator › Square root of 991
Square Root of 991
√991 ≈ 31.480152
991 is not a perfect square, so √991 is an irrational number that is approximately 31.480152. In simplified radical form, √991 = √991.
√991 lies between √961 = 31 and √1024 = 32.
| Number | 991 |
| Square root (decimal) | 31.480152 |
| Simplified radical | √991 |
| Perfect square? | No |
| Rational? | No |
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Frequently asked questions
Is 991 a perfect square?
No, 991 is not a perfect square, so its square root is irrational and approximately 31.480152.
What is the square root of 991 in simplest radical form?
√991 = √991 in simplest radical form.