319719695443 has 2 divisors, whose sum is σ = 319719695444. Its totient is φ = 319719695442.

The previous prime is 319719695431. The next prime is 319719695489. The reversal of 319719695443 is 344596917913.

It is a weak prime.

It is an emirp because it is prime and its reverse (344596917913) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-319719695443 is a prime.

It is not a weakly prime, because it can be changed into another prime (319719690443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159859847721 + 159859847722.

It is an arithmetic number, because the mean of its divisors is an integer number (159859847722).

Almost surely, 2^319719695443 is an apocalyptic number.

319719695443 is a deficient number, since it is larger than the sum of its proper divisors (1).

319719695443 is an equidigital number, since it uses as much as digits as its factorization.

319719695443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22044960, while the sum is 61.

The spelling of 319719695443 in words is "three hundred nineteen billion, seven hundred nineteen million, six hundred ninety-five thousand, four hundred forty-three".