13231113021 has 64 divisors (see below), whose sum is σ = 22944153600. Its totient is φ = 7378553088.

The previous prime is 13231113001. The next prime is 13231113037. The reversal of 13231113021 is 12031113231.

It is not a de Polignac number, because 13231113021 - 2⁵ = 13231112989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13231112985 and 13231113003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231113001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3400245 + ... + 3404133.

It is an arithmetic number, because the mean of its divisors is an integer number (358502400).

Almost surely, 2^13231113021 is an apocalyptic number.

It is an amenable number.

13231113021 is a deficient number, since it is larger than the sum of its proper divisors (9713040579).

13231113021 is a wasteful number, since it uses less digits than its factorization.

13231113021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4335 (or 4329 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 13231113021 its reverse (12031113231), we get a palindrome (25262226252).

The spelling of 13231113021 in words is "thirteen billion, two hundred thirty-one million, one hundred thirteen thousand, twenty-one".