318944249 has 4 divisors (see below), whose sum is σ = 343478436. Its totient is φ = 294410064.

The previous prime is 318944239. The next prime is 318944261. The reversal of 318944249 is 942449813.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 942449813 = 397 ⋅2373929.

It can be written as a sum of positive squares in 2 ways, for example, as 84640000 + 234304249 = 9200^2 + 15307^2 .

It is not a de Polignac number, because 318944249 - 2⁸ = 318943993 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (318944239) 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, 12267074 + ... + 12267099.

It is an arithmetic number, because the mean of its divisors is an integer number (85869609).

Almost surely, 2^318944249 is an apocalyptic number.

It is an amenable number.

318944249 is a deficient number, since it is larger than the sum of its proper divisors (24534187).

318944249 is a wasteful number, since it uses less digits than its factorization.

318944249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24534186.

The product of its digits is 248832, while the sum is 44.

The square root of 318944249 is about 17859.0103029255. The cubic root of 318944249 is about 683.2373379065.

The spelling of 318944249 in words is "three hundred eighteen million, nine hundred forty-four thousand, two hundred forty-nine".