319279 has 2 divisors, whose sum is σ = 319280. Its totient is φ = 319278.

The previous prime is 319259. The next prime is 319289. The reversal of 319279 is 972913.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-319279 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 319279.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (319259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159639 + 159640.

It is an arithmetic number, because the mean of its divisors is an integer number (159640).

2³¹⁹²⁷⁹ is an apocalyptic number.

319279 is a deficient number, since it is larger than the sum of its proper divisors (1).

319279 is an equidigital number, since it uses as much as digits as its factorization.

319279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3402, while the sum is 31.

The square root of 319279 is about 565.0477855899. The cubic root of 319279 is about 68.3476287099.

The spelling of 319279 in words is "three hundred nineteen thousand, two hundred seventy-nine".