23131103137 has 2 divisors, whose sum is σ = 23131103138. Its totient is φ = 23131103136.

The previous prime is 23131103129. The next prime is 23131103263. The reversal of 23131103137 is 73130113132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21672550656 + 1458552481 = 147216^2 + 38191^2 .

It is a cyclic number.

It is not a de Polignac number, because 23131103137 - 2³ = 23131103129 is a prime.

It is not a weakly prime, because it can be changed into another prime (23131103117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11565551568 + 11565551569.

It is an arithmetic number, because the mean of its divisors is an integer number (11565551569).

Almost surely, 2^23131103137 is an apocalyptic number.

It is an amenable number.

23131103137 is a deficient number, since it is larger than the sum of its proper divisors (1).

23131103137 is an equidigital number, since it uses as much as digits as its factorization.

23131103137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134, while the sum is 25.

Adding to 23131103137 its reverse (73130113132), we get a palindrome (96261216269).

The spelling of 23131103137 in words is "twenty-three billion, one hundred thirty-one million, one hundred three thousand, one hundred thirty-seven".