131136285 has 16 divisors (see below), whose sum is σ = 239792256. Its totient is φ = 59947968.

The previous prime is 131136277. The next prime is 131136307. The reversal of 131136285 is 582631131.

It is not a de Polignac number, because 131136285 - 2³ = 131136277 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 624354 + ... + 624563.

It is an arithmetic number, because the mean of its divisors is an integer number (14987016).

Almost surely, 2^131136285 is an apocalyptic number.

131136285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131136285 is a deficient number, since it is larger than the sum of its proper divisors (108655971).

131136285 is a wasteful number, since it uses less digits than its factorization.

131136285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1248932.

The product of its digits is 4320, while the sum is 30.

The square root of 131136285 is about 11451.4752324755. The cubic root of 131136285 is about 508.0513683666.

The spelling of 131136285 in words is "one hundred thirty-one million, one hundred thirty-six thousand, two hundred eighty-five".