131128944 has 20 divisors (see below), whose sum is σ = 338749896. Its totient is φ = 43709632.

The previous prime is 131128909. The next prime is 131128967. The reversal of 131128944 is 449821131.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1365879 + ... + 1365974.

Almost surely, 2^131128944 is an apocalyptic number.

It is an amenable number.

131128944 is an abundant number, since it is smaller than the sum of its proper divisors (207620952).

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

131128944 is a wasteful number, since it uses less digits than its factorization.

131128944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2731864 (or 2731858 counting only the distinct ones).

The product of its digits is 6912, while the sum is 33.

The square root of 131128944 is about 11451.1547016011. The cubic root of 131128944 is about 508.0418879631.

The spelling of 131128944 in words is "one hundred thirty-one million, one hundred twenty-eight thousand, nine hundred forty-four".