113113111312 has 40 divisors (see below), whose sum is σ = 231041685600. Its totient is φ = 53498495232.

The previous prime is 113113111261. The next prime is 113113111351. The reversal of 113113111312 is 213111311311.

It is a super-2 number, since 2×113113111312² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 113113111312.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81973 + ... + 482644.

It is an arithmetic number, because the mean of its divisors is an integer number (5776042140).

Almost surely, 2^113113111312 is an apocalyptic number.

It is an amenable number.

113113111312 is an abundant number, since it is smaller than the sum of its proper divisors (117928574288).

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

113113111312 is a wasteful number, since it uses less digits than its factorization.

113113111312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565303 (or 565297 counting only the distinct ones).

The product of its digits is 54, while the sum is 19.

Adding to 113113111312 its reverse (213111311311), we get a palindrome (326224422623).

The spelling of 113113111312 in words is "one hundred thirteen billion, one hundred thirteen million, one hundred eleven thousand, three hundred twelve".