13120331112 has 48 divisors (see below), whose sum is σ = 40610550240. Its totient is φ = 3748665888.

The previous prime is 13120331093. The next prime is 13120331113. The reversal of 13120331112 is 21113302131.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (13120331113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13015698 + ... + 13016705.

It is an arithmetic number, because the mean of its divisors is an integer number (846053130).

Almost surely, 2^13120331112 is an apocalyptic number.

13120331112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13120331112 is an abundant number, since it is smaller than the sum of its proper divisors (27490219128).

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

13120331112 is a wasteful number, since it uses less digits than its factorization.

13120331112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26032422 (or 26032415 counting only the distinct ones).

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

Adding to 13120331112 its reverse (21113302131), we get a palindrome (34233633243).

The spelling of 13120331112 in words is "thirteen billion, one hundred twenty million, three hundred thirty-one thousand, one hundred twelve".