318245 has 4 divisors (see below), whose sum is σ = 381900. Its totient is φ = 254592.

The previous prime is 318233. The next prime is 318247. The reversal of 318245 is 542813.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 542813 = 271 ⋅2003.

It can be written as a sum of positive squares in 2 ways, for example, as 88804 + 229441 = 298^2 + 479^2 .

It is a cyclic number.

It is not a de Polignac number, because 318245 - 2⁴ = 318229 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 318245.

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 318245.

It is not an unprimeable number, because it can be changed into a prime (318247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31820 + ... + 31829.

It is an arithmetic number, because the mean of its divisors is an integer number (95475).

2³¹⁸²⁴⁵ is an apocalyptic number.

It is an amenable number.

318245 is a deficient number, since it is larger than the sum of its proper divisors (63655).

318245 is an equidigital number, since it uses as much as digits as its factorization.

318245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63654.

The product of its digits is 960, while the sum is 23.

The square root of 318245 is about 564.1320767338. The cubic root of 318245 is about 68.2737665845.

The spelling of 318245 in words is "three hundred eighteen thousand, two hundred forty-five".