115131870 has 72 divisors (see below), whose sum is σ = 348228504. Its totient is φ = 26314848.

The previous prime is 115131869. The next prime is 115131881. The reversal of 115131870 is 78131511.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8644 + ... + 17463.

It is an arithmetic number, because the mean of its divisors is an integer number (4836507).

Almost surely, 2^115131870 is an apocalyptic number.

115131870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

115131870 is an abundant number, since it is smaller than the sum of its proper divisors (233096634).

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

115131870 is a wasteful number, since it uses less digits than its factorization.

115131870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26134 (or 26124 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 27.

The square root of 115131870 is about 10729.9520036205. The cubic root of 115131870 is about 486.4802193362.

The spelling of 115131870 in words is "one hundred fifteen million, one hundred thirty-one thousand, eight hundred seventy".