113431122112 has 112 divisors (see below), whose sum is σ = 285232815360. Its totient is φ = 43469337600.

The previous prime is 113431122089. The next prime is 113431122239. The reversal of 113431122112 is 211221134311.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111939 + ... + 489277.

Almost surely, 2^113431122112 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 113431122112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142616407680).

113431122112 is an abundant number, since it is smaller than the sum of its proper divisors (171801693248).

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

113431122112 is a wasteful number, since it uses less digits than its factorization.

113431122112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377430 (or 377420 counting only the distinct ones).

The product of its digits is 288, while the sum is 22.

Adding to 113431122112 its reverse (211221134311), we get a palindrome (324652256423).

The spelling of 113431122112 in words is "one hundred thirteen billion, four hundred thirty-one million, one hundred twenty-two thousand, one hundred twelve".