312859 has 4 divisors (see below), whose sum is σ = 318816. Its totient is φ = 306904.

The previous prime is 312857. The next prime is 312863. The reversal of 312859 is 958213.

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

It is a cyclic number.

It is not a de Polignac number, because 312859 - 2¹ = 312857 is a prime.

It is a Duffinian number.

312859 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (312857) 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, 2899 + ... + 3004.

It is an arithmetic number, because the mean of its divisors is an integer number (79704).

2³¹²⁸⁵⁹ is an apocalyptic number.

312859 is a deficient number, since it is larger than the sum of its proper divisors (5957).

312859 is an equidigital number, since it uses as much as digits as its factorization.

312859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5956.

The product of its digits is 2160, while the sum is 28.

The square root of 312859 is about 559.3380015697. The cubic root of 312859 is about 67.8864164950.

The spelling of 312859 in words is "three hundred twelve thousand, eight hundred fifty-nine".