23122031231 has 16 divisors (see below), whose sum is σ = 25589255328. Its totient is φ = 20753884800.

The previous prime is 23122031227. The next prime is 23122031237. The reversal of 23122031231 is 13213022132.

It is a cyclic number.

It is not a de Polignac number, because 23122031231 - 2² = 23122031227 is a prime.

It is a super-2 number, since 2×23122031231² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23122031237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 823616 + ... + 851226.

It is an arithmetic number, because the mean of its divisors is an integer number (1599328458).

Almost surely, 2^23122031231 is an apocalyptic number.

23122031231 is a deficient number, since it is larger than the sum of its proper divisors (2467224097).

23122031231 is a wasteful number, since it uses less digits than its factorization.

23122031231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29402.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 23122031231 its reverse (13213022132), we get a palindrome (36335053363).

Subtracting from 23122031231 its reverse (13213022132), we obtain a palindrome (9909009099).

The spelling of 23122031231 in words is "twenty-three billion, one hundred twenty-two million, thirty-one thousand, two hundred thirty-one".