13438524931 has 24 divisors (see below), whose sum is σ = 14839733520. Its totient is φ = 12160512000.

The previous prime is 13438524899. The next prime is 13438524943. The reversal of 13438524931 is 13942583431.

It is not a de Polignac number, because 13438524931 - 2⁵ = 13438524899 is a prime.

It is a super-2 number, since 2×13438524931² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13438524971) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3996691 + ... + 4000051.

It is an arithmetic number, because the mean of its divisors is an integer number (618322230).

Almost surely, 2^13438524931 is an apocalyptic number.

13438524931 is a deficient number, since it is larger than the sum of its proper divisors (1401208589).

13438524931 is a wasteful number, since it uses less digits than its factorization.

13438524931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3847 (or 3834 counting only the distinct ones).

The product of its digits is 311040, while the sum is 43.

The spelling of 13438524931 in words is "thirteen billion, four hundred thirty-eight million, five hundred twenty-four thousand, nine hundred thirty-one".