131377444 has 27 divisors (see below), whose sum is σ = 253197553. Its totient is φ = 59602400.

The previous prime is 131377429. The next prime is 131377501. The reversal of 131377444 is 444773131.

The square root of 131377444 is 11462.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 37675044 + 93702400 = 6138^2 + 9680^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 251904 + ... + 252424.

Almost surely, 2^131377444 is an apocalyptic number.

131377444 is the 11462-nd square number.

It is an amenable number.

131377444 is a deficient number, since it is larger than the sum of its proper divisors (121820109).

131377444 is an equidigital number, since it uses as much as digits as its factorization.

131377444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1068 (or 534 counting only the distinct ones).

The product of its digits is 28224, while the sum is 34.

The cubic root of 131377444 is about 508.3626123301.

Multiplying 131377444 by its product of digits (28224), we get a square (3707996979456 = 1925616²).

The spelling of 131377444 in words is "one hundred thirty-one million, three hundred seventy-seven thousand, four hundred forty-four".