131318438 has 16 divisors (see below), whose sum is σ = 215758080. Its totient is φ = 59665536.

The previous prime is 131318419. The next prime is 131318479. The reversal of 131318438 is 834813131.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65606 + ... + 67577.

It is an arithmetic number, because the mean of its divisors is an integer number (13484880).

Almost surely, 2^131318438 is an apocalyptic number.

131318438 is a deficient number, since it is larger than the sum of its proper divisors (84439642).

131318438 is a wasteful number, since it uses less digits than its factorization.

131318438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133231.

The product of its digits is 6912, while the sum is 32.

The square root of 131318438 is about 11459.4257273216. The cubic root of 131318438 is about 508.2864933878.

The spelling of 131318438 in words is "one hundred thirty-one million, three hundred eighteen thousand, four hundred thirty-eight".