115131800 has 48 divisors (see below), whose sum is σ = 305925360. Its totient is φ = 39473280.

The previous prime is 115131763. The next prime is 115131817. The reversal of 115131800 is 8131511.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39719 + ... + 42518.

It is an arithmetic number, because the mean of its divisors is an integer number (6373445).

Almost surely, 2^115131800 is an apocalyptic number.

115131800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115131800 is an abundant number, since it is smaller than the sum of its proper divisors (190793560).

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

115131800 is a wasteful number, since it uses less digits than its factorization.

115131800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82260 (or 82251 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 20.

The square root of 115131800 is about 10729.9487417229. The cubic root of 115131800 is about 486.4801207431.

The spelling of 115131800 in words is "one hundred fifteen million, one hundred thirty-one thousand, eight hundred".