318345 has 16 divisors (see below), whose sum is σ = 536640. Its totient is φ = 160704.

The previous prime is 318337. The next prime is 318347. The reversal of 318345 is 543813.

318345 = 9² + 10² + ... + 98².

It is not a de Polignac number, because 318345 - 2³ = 318337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (318347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 274 + ... + 843.

It is an arithmetic number, because the mean of its divisors is an integer number (33540).

2³¹⁸³⁴⁵ is an apocalyptic number.

It is an amenable number.

318345 is a deficient number, since it is larger than the sum of its proper divisors (218295).

318345 is a wasteful number, since it uses less digits than its factorization.

318345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144.

The product of its digits is 1440, while the sum is 24.

The square root of 318345 is about 564.2207014990. The cubic root of 318345 is about 68.2809169055.

The spelling of 318345 in words is "three hundred eighteen thousand, three hundred forty-five".