316857 has 4 divisors (see below), whose sum is σ = 422480. Its totient is φ = 211236.

The previous prime is 316853. The next prime is 316859. The reversal of 316857 is 758613.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 316857 - 2² = 316853 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

316857 is a lucky number.

It is a plaindrome in base 12.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 316857.

It is not an unprimeable number, because it can be changed into a prime (316853) by changing a digit.

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, 52807 + ... + 52812.

It is an arithmetic number, because the mean of its divisors is an integer number (105620).

2³¹⁶⁸⁵⁷ is an apocalyptic number.

It is an amenable number.

316857 is a deficient number, since it is larger than the sum of its proper divisors (105623).

316857 is a wasteful number, since it uses less digits than its factorization.

316857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105622.

The product of its digits is 5040, while the sum is 30.

The square root of 316857 is about 562.9005240715. The cubic root of 316857 is about 68.1743650843.

The spelling of 316857 in words is "three hundred sixteen thousand, eight hundred fifty-seven".