131986504 has 32 divisors (see below), whose sum is σ = 282192120. Its totient is φ = 57332736.

The previous prime is 131986501. The next prime is 131986507. The reversal of 131986504 is 405689131.

It is an interprime number because it is at equal distance from previous prime (131986501) and next prime (131986507).

It can be written as a sum of positive squares in 4 ways, for example, as 123165604 + 8820900 = 11098^2 + 2970^2 .

It is not an unprimeable number, because it can be changed into a prime (131986501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35559 + ... + 39094.

Almost surely, 2^131986504 is an apocalyptic number.

It is an amenable number.

131986504 is an abundant number, since it is smaller than the sum of its proper divisors (150205616).

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

131986504 is a wasteful number, since it uses less digits than its factorization.

131986504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74689 (or 74685 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 131986504 is about 11488.5379400514. The cubic root of 131986504 is about 509.1469836425.

The spelling of 131986504 in words is "one hundred thirty-one million, nine hundred eighty-six thousand, five hundred four".