113131788 has 72 divisors (see below), whose sum is σ = 335006784. Its totient is φ = 29383200.

The previous prime is 113131771. The next prime is 113131789. The reversal of 113131788 is 887131311.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (113131789) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2278 + ... + 15213.

It is an arithmetic number, because the mean of its divisors is an integer number (4652872).

Almost surely, 2^113131788 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 113131788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167503392).

113131788 is an abundant number, since it is smaller than the sum of its proper divisors (221874996).

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

113131788 is a wasteful number, since it uses less digits than its factorization.

113131788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17523 (or 17514 counting only the distinct ones).

The product of its digits is 4032, while the sum is 33.

The square root of 113131788 is about 10636.3427925204. The cubic root of 113131788 is about 483.6466868022.

The spelling of 113131788 in words is "one hundred thirteen million, one hundred thirty-one thousand, seven hundred eighty-eight".