131839909428 has 24 divisors (see below), whose sum is σ = 310797864832. Its totient is φ = 43493577984.

The previous prime is 131839909403. The next prime is 131839909459. The reversal of 131839909428 is 824909938131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56631100 + ... + 56633427.

Almost surely, 2^131839909428 is an apocalyptic number.

It is an amenable number.

131839909428 is an abundant number, since it is smaller than the sum of its proper divisors (178957955404).

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

131839909428 is a wasteful number, since it uses less digits than its factorization.

131839909428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113264631 (or 113264629 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 57.

The spelling of 131839909428 in words is "one hundred thirty-one billion, eight hundred thirty-nine million, nine hundred nine thousand, four hundred twenty-eight".