316993 has 4 divisors (see below), whose sum is σ = 323028. Its totient is φ = 310960.

The previous prime is 316991. The next prime is 317003. The reversal of 316993 is 399613.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 97969 + 219024 = 313^2 + 468^2 .

It is a cyclic number.

It is not a de Polignac number, because 316993 - 2¹ = 316991 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (316991) 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, 2938 + ... + 3043.

It is an arithmetic number, because the mean of its divisors is an integer number (80757).

2³¹⁶⁹⁹³ is an apocalyptic number.

It is an amenable number.

316993 is a deficient number, since it is larger than the sum of its proper divisors (6035).

316993 is an equidigital number, since it uses as much as digits as its factorization.

316993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6034.

The product of its digits is 4374, while the sum is 31.

The square root of 316993 is about 563.0213139838. The cubic root of 316993 is about 68.1841175252.

The spelling of 316993 in words is "three hundred sixteen thousand, nine hundred ninety-three".