13231320112 has 20 divisors (see below), whose sum is σ = 25638365736. Its totient is φ = 6614967680.

The previous prime is 13231320083. The next prime is 13231320119. The reversal of 13231320112 is 21102313231.

It is a self number, because there is not a number n which added to its sum of digits gives 13231320112.

It is not an unprimeable number, because it can be changed into a prime (13231320119) 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, 137187 + ... + 212797.

Almost surely, 2^13231320112 is an apocalyptic number.

It is an amenable number.

13231320112 is a deficient number, since it is larger than the sum of its proper divisors (12407045624).

13231320112 is a wasteful number, since it uses less digits than its factorization.

13231320112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86556 (or 86550 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 13231320112 its reverse (21102313231), we get a palindrome (34333633343).

The spelling of 13231320112 in words is "thirteen billion, two hundred thirty-one million, three hundred twenty thousand, one hundred twelve".