319378420787 has 2 divisors, whose sum is σ = 319378420788. Its totient is φ = 319378420786.

The previous prime is 319378420763. The next prime is 319378420799. The reversal of 319378420787 is 787024873913.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 319378420787 - 2⁶ = 319378420723 is a prime.

It is not a weakly prime, because it can be changed into another prime (319378420727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159689210393 + 159689210394.

It is an arithmetic number, because the mean of its divisors is an integer number (159689210394).

Almost surely, 2^319378420787 is an apocalyptic number.

319378420787 is a deficient number, since it is larger than the sum of its proper divisors (1).

319378420787 is an equidigital number, since it uses as much as digits as its factorization.

319378420787 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14224896, while the sum is 59.

The spelling of 319378420787 in words is "three hundred nineteen billion, three hundred seventy-eight million, four hundred twenty thousand, seven hundred eighty-seven".