13231113112 has 32 divisors (see below), whose sum is σ = 28356203520. Its totient is φ = 5669713440.

The previous prime is 13231113097. The next prime is 13231113113. The reversal of 13231113112 is 21131113231.

It is a self number, because there is not a number n which added to its sum of digits gives 13231113112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231113113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 651187 + ... + 671197.

It is an arithmetic number, because the mean of its divisors is an integer number (886131360).

Almost surely, 2^13231113112 is an apocalyptic number.

It is an amenable number.

13231113112 is an abundant number, since it is smaller than the sum of its proper divisors (15125090408).

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

13231113112 is a wasteful number, since it uses less digits than its factorization.

13231113112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31831 (or 31827 counting only the distinct ones).

The product of its digits is 108, while the sum is 19.

Adding to 13231113112 its reverse (21131113231), we get a palindrome (34362226343).

The spelling of 13231113112 in words is "thirteen billion, two hundred thirty-one million, one hundred thirteen thousand, one hundred twelve".