23131523357 has 2 divisors, whose sum is σ = 23131523358. Its totient is φ = 23131523356.

The previous prime is 23131523299. The next prime is 23131523369. The reversal of 23131523357 is 75332513132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21949607716 + 1181915641 = 148154^2 + 34379^2 .

It is a cyclic number.

It is not a de Polignac number, because 23131523357 - 2⁶ = 23131523293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23131522357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11565761678 + 11565761679.

It is an arithmetic number, because the mean of its divisors is an integer number (11565761679).

Almost surely, 2^23131523357 is an apocalyptic number.

It is an amenable number.

23131523357 is a deficient number, since it is larger than the sum of its proper divisors (1).

23131523357 is an equidigital number, since it uses as much as digits as its factorization.

23131523357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56700, while the sum is 35.

The spelling of 23131523357 in words is "twenty-three billion, one hundred thirty-one million, five hundred twenty-three thousand, three hundred fifty-seven".