23131130357 has 2 divisors, whose sum is σ = 23131130358. Its totient is φ = 23131130356.

The previous prime is 23131130303. The next prime is 23131130371. The reversal of 23131130357 is 75303113132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23125589041 + 5541316 = 152071^2 + 2354^2 .

It is a cyclic number.

It is not a de Polignac number, because 23131130357 - 2⁶ = 23131130293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23131130557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11565565178 + 11565565179.

It is an arithmetic number, because the mean of its divisors is an integer number (11565565179).

Almost surely, 2^23131130357 is an apocalyptic number.

It is an amenable number.

23131130357 is a deficient number, since it is larger than the sum of its proper divisors (1).

23131130357 is an equidigital number, since it uses as much as digits as its factorization.

23131130357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5670, while the sum is 29.

Adding to 23131130357 its reverse (75303113132), we get a palindrome (98434243489).

The spelling of 23131130357 in words is "twenty-three billion, one hundred thirty-one million, one hundred thirty thousand, three hundred fifty-seven".