131808670 has 32 divisors (see below), whose sum is σ = 272154816. Its totient is φ = 45024000.

The previous prime is 131808647. The next prime is 131808671. The reversal of 131808670 is 76808131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131808671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16320 + ... + 23020.

It is an arithmetic number, because the mean of its divisors is an integer number (8504838).

Almost surely, 2^131808670 is an apocalyptic number.

131808670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131808670 is an abundant number, since it is smaller than the sum of its proper divisors (140346146).

131808670 is a wasteful number, since it uses less digits than its factorization.

131808670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6996.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 131808670 is about 11480.7957041313. The cubic root of 131808670 is about 508.9182119183.

The spelling of 131808670 in words is "one hundred thirty-one million, eight hundred eight thousand, six hundred seventy".