316385 has 4 divisors (see below), whose sum is σ = 379668. Its totient is φ = 253104.

The previous prime is 316373. The next prime is 316391. The reversal of 316385 is 583613.

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 44944 + 271441 = 212^2 + 521^2 .

It is a cyclic number.

It is not a de Polignac number, because 316385 - 2⁶ = 316321 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31634 + ... + 31643.

It is an arithmetic number, because the mean of its divisors is an integer number (94917).

2³¹⁶³⁸⁵ is an apocalyptic number.

It is an amenable number.

316385 is a deficient number, since it is larger than the sum of its proper divisors (63283).

316385 is an equidigital number, since it uses as much as digits as its factorization.

316385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63282.

The product of its digits is 2160, while the sum is 26.

The square root of 316385 is about 562.4811107940. The cubic root of 316385 is about 68.1404967131.

Adding to 316385 its reverse (583613), we get a palindrome (899998).

The spelling of 316385 in words is "three hundred sixteen thousand, three hundred eighty-five".