113013131220 has 108 divisors (see below), whose sum is σ = 376803909300. Its totient is φ = 27397117440.

The previous prime is 113013131213. The next prime is 113013131291. The reversal of 113013131220 is 22131310311.

113013131220 is a `hidden beast` number, since 1 + 1 + 301 + 31 + 312 + 20 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 70009984836 + 43003146384 = 264594^2 + 207372^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 113013131193 and 113013131202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2572645 + ... + 2616204.

Almost surely, 2^113013131220 is an apocalyptic number.

113013131220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113013131220 is an abundant number, since it is smaller than the sum of its proper divisors (263790778080).

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

113013131220 is a wasteful number, since it uses less digits than its factorization.

113013131220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5188886 (or 5188870 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 113013131220 its reverse (22131310311), we get a palindrome (135144441531).

The spelling of 113013131220 in words is "one hundred thirteen billion, thirteen million, one hundred thirty-one thousand, two hundred twenty".