312679 has 2 divisors, whose sum is σ = 312680. Its totient is φ = 312678.

The previous prime is 312677. The next prime is 312701. The reversal of 312679 is 976213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312679 - 2¹ = 312677 is a prime.

Together with 312677, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156339 + 156340.

It is an arithmetic number, because the mean of its divisors is an integer number (156340).

2³¹²⁶⁷⁹ is an apocalyptic number.

312679 is a deficient number, since it is larger than the sum of its proper divisors (1).

312679 is an equidigital number, since it uses as much as digits as its factorization.

312679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268, while the sum is 28.

The square root of 312679 is about 559.1770739220. The cubic root of 312679 is about 67.8733947619.

The spelling of 312679 in words is "three hundred twelve thousand, six hundred seventy-nine".