13231033312 has 72 divisors (see below), whose sum is σ = 31346413560. Its totient is φ = 5474891520.

The previous prime is 13231033279. The next prime is 13231033339. The reversal of 13231033312 is 21333013231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100014 + ... + 190957.

It is an arithmetic number, because the mean of its divisors is an integer number (435366855).

Almost surely, 2^13231033312 is an apocalyptic number.

It is an amenable number.

13231033312 is an abundant number, since it is smaller than the sum of its proper divisors (18115380248).

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

13231033312 is a wasteful number, since it uses less digits than its factorization.

13231033312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291024 (or 291009 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 13231033312 its reverse (21333013231), we get a palindrome (34564046543).

The spelling of 13231033312 in words is "thirteen billion, two hundred thirty-one million, thirty-three thousand, three hundred twelve".