13238233731 has 16 divisors (see below), whose sum is σ = 19614366720. Its totient is φ = 8824513320.

The previous prime is 13238233703. The next prime is 13238233817. The reversal of 13238233731 is 13733283231.

It is not a de Polignac number, because 13238233731 - 2¹⁷ = 13238102659 is a prime.

It is a super-2 number, since 2×13238233731² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13238233031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 288346 + ... + 331088.

It is an arithmetic number, because the mean of its divisors is an integer number (1225897920).

Almost surely, 2^13238233731 is an apocalyptic number.

13238233731 is a deficient number, since it is larger than the sum of its proper divisors (6376132989).

13238233731 is a wasteful number, since it uses less digits than its factorization.

13238233731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54223 (or 54217 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The spelling of 13238233731 in words is "thirteen billion, two hundred thirty-eight million, two hundred thirty-three thousand, seven hundred thirty-one".