131660444 has 12 divisors (see below), whose sum is σ = 243959184. Its totient is φ = 61957824.

The previous prime is 131660411. The next prime is 131660449. The reversal of 131660444 is 444066131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131660449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 968024 + ... + 968159.

It is an arithmetic number, because the mean of its divisors is an integer number (20329932).

Almost surely, 2^131660444 is an apocalyptic number.

It is an amenable number.

131660444 is a deficient number, since it is larger than the sum of its proper divisors (112298740).

131660444 is a wasteful number, since it uses less digits than its factorization.

131660444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1936204 (or 1936202 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 131660444 is about 11474.3384994517. The cubic root of 131660444 is about 508.7273716510.

The spelling of 131660444 in words is "one hundred thirty-one million, six hundred sixty thousand, four hundred forty-four".