318939113 has 8 divisors (see below), whose sum is σ = 322497480. Its totient is φ = 315388800.

The previous prime is 318939097. The next prime is 318939121. The reversal of 318939113 is 311939813.

It can be written as a sum of positive squares in 4 ways, for example, as 91623184 + 227315929 = 9572^2 + 15077^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 318939113 - 2⁴ = 318939097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (318939143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112631 + ... + 115427.

It is an arithmetic number, because the mean of its divisors is an integer number (40312185).

Almost surely, 2^318939113 is an apocalyptic number.

It is an amenable number.

318939113 is a deficient number, since it is larger than the sum of its proper divisors (3558367).

318939113 is a wasteful number, since it uses less digits than its factorization.

318939113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4027.

The product of its digits is 17496, while the sum is 38.

The square root of 318939113 is about 17858.8665093841. The cubic root of 318939113 is about 683.2336704674.

The spelling of 318939113 in words is "three hundred eighteen million, nine hundred thirty-nine thousand, one hundred thirteen".