319717379 has 2 divisors, whose sum is σ = 319717380. Its totient is φ = 319717378.

The previous prime is 319717357. The next prime is 319717403. The reversal of 319717379 is 973717913.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-319717379 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (319710379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159858689 + 159858690.

It is an arithmetic number, because the mean of its divisors is an integer number (159858690).

Almost surely, 2^319717379 is an apocalyptic number.

319717379 is a deficient number, since it is larger than the sum of its proper divisors (1).

319717379 is an equidigital number, since it uses as much as digits as its factorization.

319717379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 250047, while the sum is 47.

The square root of 319717379 is about 17880.6425779389. The cubic root of 319717379 is about 683.7889547304.

The spelling of 319717379 in words is "three hundred nineteen million, seven hundred seventeen thousand, three hundred seventy-nine".