13312403232 has 24 divisors (see below), whose sum is σ = 34945058736. Its totient is φ = 4437467712.

The previous prime is 13312403141. The next prime is 13312403233. The reversal of 13312403232 is 23230421331.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×13312403232² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (13312403233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69335338 + ... + 69335529.

It is an arithmetic number, because the mean of its divisors is an integer number (1456044114).

Almost surely, 2^13312403232 is an apocalyptic number.

13312403232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13312403232 is an abundant number, since it is smaller than the sum of its proper divisors (21632655504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13312403232 is a wasteful number, since it uses less digits than its factorization.

13312403232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138670880 (or 138670872 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 13312403232 its reverse (23230421331), we get a palindrome (36542824563).

The spelling of 13312403232 in words is "thirteen billion, three hundred twelve million, four hundred three thousand, two hundred thirty-two".