23137005317 has 4 divisors (see below), whose sum is σ = 23137375116. Its totient is φ = 23136635520.

The previous prime is 23137005271. The next prime is 23137005349. The reversal of 23137005317 is 71350073132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18249037921 + 4887967396 = 135089^2 + 69914^2 .

It is a cyclic number.

It is not a de Polignac number, because 23137005317 - 2²⁶ = 23069896453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23137905317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65234 + ... + 224787.

It is an arithmetic number, because the mean of its divisors is an integer number (5784343779).

Almost surely, 2^23137005317 is an apocalyptic number.

It is an amenable number.

23137005317 is a deficient number, since it is larger than the sum of its proper divisors (369799).

23137005317 is an equidigital number, since it uses as much as digits as its factorization.

23137005317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369798.

The product of its (nonzero) digits is 13230, while the sum is 32.

Adding to 23137005317 its reverse (71350073132), we get a palindrome (94487078449).

The spelling of 23137005317 in words is "twenty-three billion, one hundred thirty-seven million, five thousand, three hundred seventeen".