23115937318831 has 4 divisors (see below), whose sum is σ = 26418214078672. Its totient is φ = 19813660558992.

The previous prime is 23115937318819. The next prime is 23115937318891. The reversal of 23115937318831 is 13881373951132.

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

It is a cyclic number.

It is not a de Polignac number, because 23115937318831 - 2²⁷ = 23115803101103 is a prime.

It is a super-2 number, since 2×23115937318831² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23115937318891) 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 in 3 ways as a sum of consecutive naturals, for example, 1651138379910 + ... + 1651138379923.

It is an arithmetic number, because the mean of its divisors is an integer number (6604553519668).

Almost surely, 2^{23115937318831} is an apocalyptic number.

23115937318831 is a deficient number, since it is larger than the sum of its proper divisors (3302276759841).

23115937318831 is an equidigital number, since it uses as much as digits as its factorization.

23115937318831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3302276759840.

The product of its digits is 3265920, while the sum is 55.

The spelling of 23115937318831 in words is "twenty-three trillion, one hundred fifteen billion, nine hundred thirty-seven million, three hundred eighteen thousand, eight hundred thirty-one".