315318 has 8 divisors (see below), whose sum is σ = 630648. Its totient is φ = 105104.

The previous prime is 315313. The next prime is 315349. The reversal of 315318 is 813513.

It is a happy number.

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

315318 is an admirable number.

It is a super-2 number, since 2×315318² = 198850882248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 315294 and 315303.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 315318.

It is not an unprimeable number, because it can be changed into a prime (315313) by changing a digit.

315318 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26271 + ... + 26282.

It is an arithmetic number, because the mean of its divisors is an integer number (78831).

2³¹⁵³¹⁸ is an apocalyptic number.

315318 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

315318 is a wasteful number, since it uses less digits than its factorization.

315318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52558.

The product of its digits is 360, while the sum is 21.

The square root of 315318 is about 561.5318334698. The cubic root of 315318 is about 68.0638097690.

It can be divided in two parts, 3 and 15318, that multiplied together give a palindrome (45954).

The spelling of 315318 in words is "three hundred fifteen thousand, three hundred eighteen".