131057800 has 24 divisors (see below), whose sum is σ = 304709850. Its totient is φ = 52423040.

The previous prime is 131057789. The next prime is 131057803. The reversal of 131057800 is 8750131.

It can be written as a sum of positive squares in 3 ways, for example, as 99720196 + 31337604 = 9986^2 + 5598^2 .

It is a super-2 number, since 2×131057800² = 34352293881680000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (131057803) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 327445 + ... + 327844.

Almost surely, 2^131057800 is an apocalyptic number.

131057800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131057800 is an abundant number, since it is smaller than the sum of its proper divisors (173652050).

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

131057800 is a wasteful number, since it uses less digits than its factorization.

131057800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655305 (or 655296 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 131057800 is about 11448.0478685233. The cubic root of 131057800 is about 507.9499919773.

The spelling of 131057800 in words is "one hundred thirty-one million, fifty-seven thousand, eight hundred".