131895684 has 36 divisors (see below), whose sum is σ = 334174204. Its totient is φ = 43863552.

The previous prime is 131895679. The next prime is 131895689. The reversal of 131895684 is 486598131.

131895684 is a `hidden beast` number, since 1 + 3 + 1 + 89 + 568 + 4 = 666.

131895684 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (131895679) and next prime (131895689).

It can be written as a sum of positive squares in 2 ways, for example, as 96825600 + 35070084 = 9840^2 + 5922^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (131895689) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 12444 + ... + 20460.

Almost surely, 2^131895684 is an apocalyptic number.

It is an amenable number.

131895684 is an abundant number, since it is smaller than the sum of its proper divisors (202278520).

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

131895684 is a wasteful number, since it uses less digits than its factorization.

131895684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8484 (or 8479 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 131895684 is about 11484.5846246175. The cubic root of 131895684 is about 509.0301753886.

The spelling of 131895684 in words is "one hundred thirty-one million, eight hundred ninety-five thousand, six hundred eighty-four".