131631884 has 12 divisors (see below), whose sum is σ = 243906264. Its totient is φ = 61944384.

The previous prime is 131631881. The next prime is 131631893. The reversal of 131631884 is 488136131.

It is not an unprimeable number, because it can be changed into a prime (131631881) 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 3 ways as a sum of consecutive naturals, for example, 967814 + ... + 967949.

It is an arithmetic number, because the mean of its divisors is an integer number (20325522).

Almost surely, 2^131631884 is an apocalyptic number.

It is an amenable number.

131631884 is a deficient number, since it is larger than the sum of its proper divisors (112274380).

131631884 is a wasteful number, since it uses less digits than its factorization.

131631884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1935784 (or 1935782 counting only the distinct ones).

The product of its digits is 13824, while the sum is 35.

The square root of 131631884 is about 11473.0939157666. The cubic root of 131631884 is about 508.6905843316.

The spelling of 131631884 in words is "one hundred thirty-one million, six hundred thirty-one thousand, eight hundred eighty-four".