318593 has 6 divisors (see below), whose sum is σ = 350322. Its totient is φ = 289520.

The previous prime is 318589. The next prime is 318601. The reversal of 318593 is 395813.

It can be written as a sum of positive squares in only one way, i.e., 223729 + 94864 = 473^2 + 308^2 .

It is not a de Polignac number, because 318593 - 2² = 318589 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (318503) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1196 + ... + 1437.

It is an arithmetic number, because the mean of its divisors is an integer number (58387).

2³¹⁸⁵⁹³ is an apocalyptic number.

It is an amenable number.

318593 is a deficient number, since it is larger than the sum of its proper divisors (31729).

318593 is a wasteful number, since it uses less digits than its factorization.

318593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2655 (or 2644 counting only the distinct ones).

The product of its digits is 3240, while the sum is 29.

The square root of 318593 is about 564.4404308694. The cubic root of 318593 is about 68.2986432422.

The spelling of 318593 in words is "three hundred eighteen thousand, five hundred ninety-three".