131783644 has 12 divisors (see below), whose sum is σ = 231588000. Its totient is φ = 65615648.

The previous prime is 131783633. The next prime is 131783657. The reversal of 131783644 is 446387131.

131783644 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 3 ways as a sum of consecutive naturals, for example, 67969 + ... + 69880.

It is an arithmetic number, because the mean of its divisors is an integer number (19299000).

Almost surely, 2^131783644 is an apocalyptic number.

It is an amenable number.

131783644 is a deficient number, since it is larger than the sum of its proper divisors (99804356).

131783644 is a wasteful number, since it uses less digits than its factorization.

131783644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138092 (or 138090 counting only the distinct ones).

The product of its digits is 48384, while the sum is 37.

The square root of 131783644 is about 11479.7057453578. The cubic root of 131783644 is about 508.8860011052.

The spelling of 131783644 in words is "one hundred thirty-one million, seven hundred eighty-three thousand, six hundred forty-four".