131838856 has 16 divisors (see below), whose sum is σ = 248262300. Its totient is φ = 65635584.

The previous prime is 131838841. The next prime is 131838857. The reversal of 131838856 is 658838131.

It can be written as a sum of positive squares in 2 ways, for example, as 130736356 + 1102500 = 11434^2 + 1050^2 .

It is not an unprimeable number, because it can be changed into a prime (131838857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33501 + ... + 37228.

Almost surely, 2^131838856 is an apocalyptic number.

It is an amenable number.

131838856 is a deficient number, since it is larger than the sum of its proper divisors (116423444).

131838856 is a wasteful number, since it uses less digits than its factorization.

131838856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70968 (or 70964 counting only the distinct ones).

The product of its digits is 138240, while the sum is 43.

The square root of 131838856 is about 11482.1102590073. The cubic root of 131838856 is about 508.9570587118.

The spelling of 131838856 in words is "one hundred thirty-one million, eight hundred thirty-eight thousand, eight hundred fifty-six".