113100520 has 64 divisors (see below), whose sum is σ = 275425920. Its totient is φ = 41551104.

The previous prime is 113100511. The next prime is 113100523. The reversal of 113100520 is 25001311.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 113100520.

It is not an unprimeable number, because it can be changed into a prime (113100523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136347 + ... + 137173.

It is an arithmetic number, because the mean of its divisors is an integer number (4303530).

Almost surely, 2^113100520 is an apocalyptic number.

113100520 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 113100520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137712960).

113100520 is an abundant number, since it is smaller than the sum of its proper divisors (162325400).

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

113100520 is a wasteful number, since it uses less digits than its factorization.

113100520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114 (or 1110 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 113100520 is about 10634.8728248155. The cubic root of 113100520 is about 483.6021250325.

Adding to 113100520 its reverse (25001311), we get a palindrome (138101831).

The spelling of 113100520 in words is "one hundred thirteen million, one hundred thousand, five hundred twenty".