113012131100 has 144 divisors (see below), whose sum is σ = 283835166720. Its totient is φ = 38624947200.

The previous prime is 113012131093. The next prime is 113012131109. The reversal of 113012131100 is 1131210311.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113012131109) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 2633012 + ... + 2675588.

Almost surely, 2^113012131100 is an apocalyptic number.

113012131100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 113012131100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141917583360).

113012131100 is an abundant number, since it is smaller than the sum of its proper divisors (170823035620).

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

113012131100 is a wasteful number, since it uses less digits than its factorization.

113012131100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42748 (or 42741 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 113012131100 its reverse (1131210311), we get a palindrome (114143341411).

The spelling of 113012131100 in words is "one hundred thirteen billion, twelve million, one hundred thirty-one thousand, one hundred".