131061800 has 48 divisors (see below), whose sum is σ = 314563200. Its totient is φ = 50731200.

The previous prime is 131061793. The next prime is 131061863. The reversal of 131061800 is 8160131.

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

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, 4370 + ... + 16769.

It is an arithmetic number, because the mean of its divisors is an integer number (6553400).

Almost surely, 2^131061800 is an apocalyptic number.

131061800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131061800 is an abundant number, since it is smaller than the sum of its proper divisors (183501400).

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

131061800 is a wasteful number, since it uses less digits than its factorization.

131061800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21186 (or 21177 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 131061800 is about 11448.2225694647. Note that the first 3 decimals coincide. The cubic root of 131061800 is about 507.9551596191.

The spelling of 131061800 in words is "one hundred thirty-one million, sixty-one thousand, eight hundred".