131585910 has 16 divisors (see below), whose sum is σ = 315806256. Its totient is φ = 35089568.

The previous prime is 131585903. The next prime is 131585969. The reversal of 131585910 is 19585131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2193069 + ... + 2193128.

It is an arithmetic number, because the mean of its divisors is an integer number (19737891).

Almost surely, 2^131585910 is an apocalyptic number.

131585910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131585910 is an abundant number, since it is smaller than the sum of its proper divisors (184220346).

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

131585910 is a wasteful number, since it uses less digits than its factorization.

131585910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4386207.

The product of its (nonzero) digits is 5400, while the sum is 33.

The square root of 131585910 is about 11471.0901835876. The cubic root of 131585910 is about 508.6313553580.

The spelling of 131585910 in words is "one hundred thirty-one million, five hundred eighty-five thousand, nine hundred ten".