131444384 has 24 divisors (see below), whose sum is σ = 262330740. Its totient is φ = 64820736.

The previous prime is 131444381. The next prime is 131444407. The reversal of 131444384 is 483444131.

It can be written as a sum of positive squares in 2 ways, for example, as 112954384 + 18490000 = 10628^2 + 4300^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 131444384.

It is not an unprimeable number, because it can be changed into a prime (131444381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25799 + ... + 30470.

Almost surely, 2^131444384 is an apocalyptic number.

It is an amenable number.

131444384 is a deficient number, since it is larger than the sum of its proper divisors (130886356).

131444384 is an equidigital number, since it uses as much as digits as its factorization.

131444384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56352 (or 56344 counting only the distinct ones).

The product of its digits is 18432, while the sum is 32.

The square root of 131444384 is about 11464.9197118863. The cubic root of 131444384 is about 508.4489387044.

The spelling of 131444384 in words is "one hundred thirty-one million, four hundred forty-four thousand, three hundred eighty-four".