316885 has 4 divisors (see below), whose sum is σ = 380268. Its totient is φ = 253504.

The previous prime is 316879. The next prime is 316891. The reversal of 316885 is 588613.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 588613 = 29 ⋅20297.

It is an interprime number because it is at equal distance from previous prime (316879) and next prime (316891).

It can be written as a sum of positive squares in 2 ways, for example, as 47524 + 269361 = 218^2 + 519^2 .

It is a cyclic number.

It is not a de Polignac number, because 316885 - 2⁵ = 316853 is a prime.

It is a super-2 number, since 2×316885² = 200832206450, which contains 22 as substring.

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 a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31684 + ... + 31693.

It is an arithmetic number, because the mean of its divisors is an integer number (95067).

2³¹⁶⁸⁸⁵ is an apocalyptic number.

It is an amenable number.

316885 is a deficient number, since it is larger than the sum of its proper divisors (63383).

316885 is an equidigital number, since it uses as much as digits as its factorization.

316885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63382.

The product of its digits is 5760, while the sum is 31.

The square root of 316885 is about 562.9253947016. The cubic root of 316885 is about 68.1763731679.

The spelling of 316885 in words is "three hundred sixteen thousand, eight hundred eighty-five".