131240584 has 16 divisors (see below), whose sum is σ = 246329820. Its totient is φ = 65552640.

The previous prime is 131240569. The next prime is 131240609. The reversal of 131240584 is 485042131.

It can be written as a sum of positive squares in 2 ways, for example, as 93663684 + 37576900 = 9678^2 + 6130^2 .

It is a super-2 number, since 2×131240584² = 34448181777322112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324 + ... + 16204.

Almost surely, 2^131240584 is an apocalyptic number.

It is an amenable number.

131240584 is a deficient number, since it is larger than the sum of its proper divisors (115089236).

131240584 is a wasteful number, since it uses less digits than its factorization.

131240584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16920 (or 16916 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 131240584 is about 11456.0282820880. The cubic root of 131240584 is about 508.1860252430.

The spelling of 131240584 in words is "one hundred thirty-one million, two hundred forty thousand, five hundred eighty-four".