318443242 has 8 divisors (see below), whose sum is σ = 514408356. Its totient is φ = 146973792.

The previous prime is 318443227. The next prime is 318443261. The reversal of 318443242 is 242344813.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 315098001 + 3345241 = 17751^2 + 1829^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 6123883 + ... + 6123934.

Almost surely, 2^318443242 is an apocalyptic number.

318443242 is a deficient number, since it is larger than the sum of its proper divisors (195965114).

318443242 is a wasteful number, since it uses less digits than its factorization.

318443242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12247832.

The product of its digits is 18432, while the sum is 31.

The square root of 318443242 is about 17844.9780610680. The cubic root of 318443242 is about 682.8794006580.

The spelling of 318443242 in words is "three hundred eighteen million, four hundred forty-three thousand, two hundred forty-two".