131531888 has 10 divisors (see below), whose sum is σ = 254843064. Its totient is φ = 65765936.

The previous prime is 131531861. The next prime is 131531893. The reversal of 131531888 is 888135131.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4110356 + ... + 4110387.

Almost surely, 2^131531888 is an apocalyptic number.

It is an amenable number.

131531888 is a deficient number, since it is larger than the sum of its proper divisors (123311176).

131531888 is an equidigital number, since it uses as much as digits as its factorization.

131531888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8220751 (or 8220745 counting only the distinct ones).

The product of its digits is 23040, while the sum is 38.

The square root of 131531888 is about 11468.7352397725. The cubic root of 131531888 is about 508.5617403965.

The spelling of 131531888 in words is "one hundred thirty-one million, five hundred thirty-one thousand, eight hundred eighty-eight".