131438856 has 32 divisors (see below), whose sum is σ = 330782400. Its totient is φ = 43521600.

The previous prime is 131438851. The next prime is 131438891. The reversal of 131438856 is 658834131.

It is not an unprimeable number, because it can be changed into a prime (131438851) 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 7 ways as a sum of consecutive naturals, for example, 14511 + ... + 21758.

It is an arithmetic number, because the mean of its divisors is an integer number (10336950).

Almost surely, 2^131438856 is an apocalyptic number.

It is an amenable number.

131438856 is an abundant number, since it is smaller than the sum of its proper divisors (199343544).

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

131438856 is a wasteful number, since it uses less digits than its factorization.

131438856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36429 (or 36425 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The square root of 131438856 is about 11464.6786261107. The cubic root of 131438856 is about 508.4418108606.

The spelling of 131438856 in words is "one hundred thirty-one million, four hundred thirty-eight thousand, eight hundred fifty-six".