3131497 has 2 divisors, whose sum is σ = 3131498. Its totient is φ = 3131496.

The previous prime is 3131489. The next prime is 3131501. The reversal of 3131497 is 7941313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3083536 + 47961 = 1756^2 + 219^2 .

It is a cyclic number.

It is not a de Polignac number, because 3131497 - 2³ = 3131489 is a prime.

It is a super-2 number, since 2×3131497² = 19612546922018, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3131437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1565748 + 1565749.

It is an arithmetic number, because the mean of its divisors is an integer number (1565749).

Almost surely, 2^3131497 is an apocalyptic number.

It is an amenable number.

3131497 is a deficient number, since it is larger than the sum of its proper divisors (1).

3131497 is an equidigital number, since it uses as much as digits as its factorization.

3131497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268, while the sum is 28.

The square root of 3131497 is about 1769.6036279348. The cubic root of 3131497 is about 146.3021359401.

The spelling of 3131497 in words is "three million, one hundred thirty-one thousand, four hundred ninety-seven".