12923637531 has 32 divisors (see below), whose sum is σ = 20739133440. Its totient is φ = 6993052704.

The previous prime is 12923637481. The next prime is 12923637533. The reversal of 12923637531 is 13573632921.

It is not a de Polignac number, because 12923637531 - 2⁷ = 12923637403 is a prime.

It is a super-2 number, since 2×12923637531² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12923637533) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1056456 + ... + 1068618.

It is an arithmetic number, because the mean of its divisors is an integer number (648097920).

Almost surely, 2^12923637531 is an apocalyptic number.

12923637531 is a deficient number, since it is larger than the sum of its proper divisors (7815495909).

12923637531 is a wasteful number, since it uses less digits than its factorization.

12923637531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14855.

The product of its digits is 204120, while the sum is 42.

The spelling of 12923637531 in words is "twelve billion, nine hundred twenty-three million, six hundred thirty-seven thousand, five hundred thirty-one".