318390 has 16 divisors (see below), whose sum is σ = 764208. Its totient is φ = 84896.

The previous prime is 318377. The next prime is 318403. The reversal of 318390 is 93813.

318390 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (318377) and next prime (318403).

It is a Curzon number.

It is a plaindrome in base 8.

It is a zygodrome in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 318390.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5277 + ... + 5336.

It is an arithmetic number, because the mean of its divisors is an integer number (47763).

2³¹⁸³⁹⁰ is an apocalyptic number.

318390 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

318390 is an abundant number, since it is smaller than the sum of its proper divisors (445818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

318390 is a wasteful number, since it uses less digits than its factorization.

318390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10623.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 318390 is about 564.2605781020. The cubic root of 318390 is about 68.2841340614.

The spelling of 318390 in words is "three hundred eighteen thousand, three hundred ninety".