231240107957 has 2 divisors, whose sum is σ = 231240107958. Its totient is φ = 231240107956.

The previous prime is 231240107911. The next prime is 231240107963. The reversal of 231240107957 is 759701042132.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131804576401 + 99435531556 = 363049^2 + 315334^2 .

It is a cyclic number.

It is not a de Polignac number, because 231240107957 - 2⁸ = 231240107701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231240107057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115620053978 + 115620053979.

It is an arithmetic number, because the mean of its divisors is an integer number (115620053979).

Almost surely, 2^231240107957 is an apocalyptic number.

It is an amenable number.

231240107957 is a deficient number, since it is larger than the sum of its proper divisors (1).

231240107957 is an equidigital number, since it uses as much as digits as its factorization.

231240107957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105840, while the sum is 41.

The spelling of 231240107957 in words is "two hundred thirty-one billion, two hundred forty million, one hundred seven thousand, nine hundred fifty-seven".