113512100 has 36 divisors (see below), whose sum is σ = 265272084. Its totient is φ = 41911680.

The previous prime is 113512093. The next prime is 113512103. The reversal of 113512100 is 1215311.

It can be written as a sum of positive squares in 6 ways, for example, as 24285184 + 89226916 = 4928^2 + 9446^2 .

It is not an unprimeable number, because it can be changed into a prime (113512103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42359 + ... + 44958.

It is an arithmetic number, because the mean of its divisors is an integer number (7368669).

Almost surely, 2^113512100 is an apocalyptic number.

113512100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113512100 is an abundant number, since it is smaller than the sum of its proper divisors (151759984).

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

113512100 is a wasteful number, since it uses less digits than its factorization.

113512100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87344 (or 87337 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 113512100 is about 10654.2057423348. The cubic root of 113512100 is about 484.1880345363.

Adding to 113512100 its reverse (1215311), we get a palindrome (114727411).

The spelling of 113512100 in words is "one hundred thirteen million, five hundred twelve thousand, one hundred".