23031012131 has 4 divisors (see below), whose sum is σ = 23056074000. Its totient is φ = 23005950264.

The previous prime is 23031012047. The next prime is 23031012161. The reversal of 23031012131 is 13121013032.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23031012131 is a prime.

It is a super-2 number, since 2×23031012131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23031012161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12529556 + ... + 12531393.

It is an arithmetic number, because the mean of its divisors is an integer number (5764018500).

Almost surely, 2^23031012131 is an apocalyptic number.

23031012131 is a deficient number, since it is larger than the sum of its proper divisors (25061869).

23031012131 is an equidigital number, since it uses as much as digits as its factorization.

23031012131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25061868.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 23031012131 its reverse (13121013032), we get a palindrome (36152025163).

Subtracting from 23031012131 its reverse (13121013032), we obtain a palindrome (9909999099).

The spelling of 23031012131 in words is "twenty-three billion, thirty-one million, twelve thousand, one hundred thirty-one".