131805486 has 24 divisors (see below), whose sum is σ = 286018824. Its totient is φ = 43867440.

The previous prime is 131805473. The next prime is 131805491. The reversal of 131805486 is 684508131.

131805486 is a `hidden beast` number, since 1 + 31 + 80 + 548 + 6 = 666.

It is a super-2 number, since 2×131805486² = 34745372279392392, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131805486.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7140 + ... + 17736.

It is an arithmetic number, because the mean of its divisors is an integer number (11917451).

Almost surely, 2^131805486 is an apocalyptic number.

131805486 is an abundant number, since it is smaller than the sum of its proper divisors (154213338).

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

131805486 is a wasteful number, since it uses less digits than its factorization.

131805486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11296 (or 11293 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 131805486 is about 11480.6570369470. The cubic root of 131805486 is about 508.9141140375.

The spelling of 131805486 in words is "one hundred thirty-one million, eight hundred five thousand, four hundred eighty-six".