113231223112 has 64 divisors (see below), whose sum is σ = 248627520000. Its totient is φ = 48324342528.

The previous prime is 113231223103. The next prime is 113231223143. The reversal of 113231223112 is 211322132311.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 569488 + ... + 742144.

It is an arithmetic number, because the mean of its divisors is an integer number (3884805000).

Almost surely, 2^113231223112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 113231223112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124313760000).

113231223112 is an abundant number, since it is smaller than the sum of its proper divisors (135396296888).

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

113231223112 is a wasteful number, since it uses less digits than its factorization.

113231223112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172923 (or 172905 counting only the distinct ones).

The product of its digits is 432, while the sum is 22.

Adding to 113231223112 its reverse (211322132311), we get a palindrome (324553355423).

The spelling of 113231223112 in words is "one hundred thirteen billion, two hundred thirty-one million, two hundred twenty-three thousand, one hundred twelve".