113111131320 has 320 divisors, whose sum is σ = 439139685600. Its totient is φ = 25807749120.

The previous prime is 113111131297. The next prime is 113111131351. The reversal of 113111131320 is 23131111311.

113111131320 is a `hidden beast` number, since 1 + 1 + 311 + 1 + 1 + 31 + 320 = 666.

113111131320 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 = 113111131293 and 113111131302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 512536 + ... + 699224.

Almost surely, 2^113111131320 is an apocalyptic number.

113111131320 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 113111131320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219569842800).

113111131320 is an abundant number, since it is smaller than the sum of its proper divisors (326028554280).

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

113111131320 is a wasteful number, since it uses less digits than its factorization.

113111131320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186740 (or 186727 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 113111131320 its reverse (23131111311), we get a palindrome (136242242631).

The spelling of 113111131320 in words is "one hundred thirteen billion, one hundred eleven million, one hundred thirty-one thousand, three hundred twenty".