131655685 has 8 divisors (see below), whose sum is σ = 180556416. Its totient is φ = 90278160.

The previous prime is 131655593. The next prime is 131655697. The reversal of 131655685 is 586556131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131655685 - 2¹¹ = 131653637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1880761 + ... + 1880830.

It is an arithmetic number, because the mean of its divisors is an integer number (22569552).

Almost surely, 2^131655685 is an apocalyptic number.

It is an amenable number.

131655685 is a deficient number, since it is larger than the sum of its proper divisors (48900731).

131655685 is an equidigital number, since it uses as much as digits as its factorization.

131655685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3761603.

The product of its digits is 108000, while the sum is 40.

The square root of 131655685 is about 11474.1311217887. The cubic root of 131655685 is about 508.7212420886.

The spelling of 131655685 in words is "one hundred thirty-one million, six hundred fifty-five thousand, six hundred eighty-five".