231330310957 has 2 divisors, whose sum is σ = 231330310958. Its totient is φ = 231330310956.

The previous prime is 231330310943. The next prime is 231330310973. The reversal of 231330310957 is 759013033132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 230372160841 + 958150116 = 479971^2 + 30954^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231330310957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231330316957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115665155478 + 115665155479.

It is an arithmetic number, because the mean of its divisors is an integer number (115665155479).

Almost surely, 2^231330310957 is an apocalyptic number.

It is an amenable number.

231330310957 is a deficient number, since it is larger than the sum of its proper divisors (1).

231330310957 is an equidigital number, since it uses as much as digits as its factorization.

231330310957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51030, while the sum is 37.

The spelling of 231330310957 in words is "two hundred thirty-one billion, three hundred thirty million, three hundred ten thousand, nine hundred fifty-seven".