23131511422 has 16 divisors (see below), whose sum is σ = 34779265920. Its totient is φ = 11538455832.

The previous prime is 23131511357. The next prime is 23131511441. The reversal of 23131511422 is 22411513132.

It is a super-2 number, since 2×23131511422² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1563753 + ... + 1578475.

It is an arithmetic number, because the mean of its divisors is an integer number (2173704120).

Almost surely, 2^23131511422 is an apocalyptic number.

23131511422 is a deficient number, since it is larger than the sum of its proper divisors (11647754498).

23131511422 is a wasteful number, since it uses less digits than its factorization.

23131511422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16527.

The product of its digits is 1440, while the sum is 25.

The spelling of 23131511422 in words is "twenty-three billion, one hundred thirty-one million, five hundred eleven thousand, four hundred twenty-two".