113012100 has 108 divisors (see below), whose sum is σ = 356574400. Its totient is φ = 29937600.

The previous prime is 113012099. The next prime is 113012117. The reversal of 113012100 is 1210311.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 178785 + ... + 179415.

Almost surely, 2^113012100 is an apocalyptic number.

113012100 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 113012100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178287200).

113012100 is an abundant number, since it is smaller than the sum of its proper divisors (243562300).

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

113012100 is a wasteful number, since it uses less digits than its factorization.

113012100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850 (or 840 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 113012100 is about 10630.7149336251. The cubic root of 113012100 is about 483.4760682948.

Adding to 113012100 its reverse (1210311), we get a palindrome (114222411).

The spelling of 113012100 in words is "one hundred thirteen million, twelve thousand, one hundred".