131775585 has 32 divisors (see below), whose sum is σ = 226333440. Its totient is φ = 65230848.

The previous prime is 131775577. The next prime is 131775613. The reversal of 131775585 is 585577131.

It is not a de Polignac number, because 131775585 - 2³ = 131775577 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15076 + ... + 22154.

It is an arithmetic number, because the mean of its divisors is an integer number (7072920).

Almost surely, 2^131775585 is an apocalyptic number.

131775585 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131775585 is a deficient number, since it is larger than the sum of its proper divisors (94557855).

131775585 is a wasteful number, since it uses less digits than its factorization.

131775585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7177.

The product of its digits is 147000, while the sum is 42.

The square root of 131775585 is about 11479.3547292520. The cubic root of 131775585 is about 508.8756275470.

The spelling of 131775585 in words is "one hundred thirty-one million, seven hundred seventy-five thousand, five hundred eighty-five".