319407863 has 2 divisors, whose sum is σ = 319407864. Its totient is φ = 319407862.

The previous prime is 319407857. The next prime is 319407889. The reversal of 319407863 is 368704913.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 319407863 - 2⁶ = 319407799 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 319407863.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (319407853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159703931 + 159703932.

It is an arithmetic number, because the mean of its divisors is an integer number (159703932).

Almost surely, 2^319407863 is an apocalyptic number.

319407863 is a deficient number, since it is larger than the sum of its proper divisors (1).

319407863 is an equidigital number, since it uses as much as digits as its factorization.

319407863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 319407863 is about 17871.9854241212. The cubic root of 319407863 is about 683.5682264981.

The spelling of 319407863 in words is "three hundred nineteen million, four hundred seven thousand, eight hundred sixty-three".