131024917 has 2 divisors, whose sum is σ = 131024918. Its totient is φ = 131024916.

The previous prime is 131024911. The next prime is 131024921. The reversal of 131024917 is 719420131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124679556 + 6345361 = 11166^2 + 2519^2 .

It is a cyclic number.

It is not a de Polignac number, because 131024917 - 2³ = 131024909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131024911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65512458 + 65512459.

It is an arithmetic number, because the mean of its divisors is an integer number (65512459).

Almost surely, 2^131024917 is an apocalyptic number.

It is an amenable number.

131024917 is a deficient number, since it is larger than the sum of its proper divisors (1).

131024917 is an equidigital number, since it uses as much as digits as its factorization.

131024917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 131024917 is about 11446.6115947035. The cubic root of 131024917 is about 507.9075061003.

The spelling of 131024917 in words is "one hundred thirty-one million, twenty-four thousand, nine hundred seventeen".