318859 has 4 divisors (see below), whose sum is σ = 320040. Its totient is φ = 317680.

The previous prime is 318841. The next prime is 318863. The reversal of 318859 is 958813.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 958813 = 311 ⋅3083.

It is a cyclic number.

It is not a de Polignac number, because 318859 - 2⁹ = 318347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (318809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39 + ... + 799.

It is an arithmetic number, because the mean of its divisors is an integer number (80010).

2³¹⁸⁸⁵⁹ is an apocalyptic number.

318859 is a deficient number, since it is larger than the sum of its proper divisors (1181).

318859 is an equidigital number, since it uses as much as digits as its factorization.

318859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1180.

The product of its digits is 8640, while the sum is 34.

The square root of 318859 is about 564.6760133032. The cubic root of 318859 is about 68.3176459461.

The spelling of 318859 in words is "three hundred eighteen thousand, eight hundred fifty-nine".