318873 has 4 divisors (see below), whose sum is σ = 425168. Its totient is φ = 212580.

The previous prime is 318863. The next prime is 318881. The reversal of 318873 is 378813.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 378813 = 3 ⋅126271.

It is not a de Polignac number, because 318873 - 2⁵ = 318841 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 318873.

It is not an unprimeable number, because it can be changed into a prime (318823) 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, 53143 + ... + 53148.

It is an arithmetic number, because the mean of its divisors is an integer number (106292).

2³¹⁸⁸⁷³ is an apocalyptic number.

It is an amenable number.

318873 is a deficient number, since it is larger than the sum of its proper divisors (106295).

318873 is a wasteful number, since it uses less digits than its factorization.

318873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106294.

The product of its digits is 4032, while the sum is 30.

The square root of 318873 is about 564.6884096562. The cubic root of 318873 is about 68.3186457956.

The spelling of 318873 in words is "three hundred eighteen thousand, eight hundred seventy-three".