320279863 has 2 divisors, whose sum is σ = 320279864. Its totient is φ = 320279862.

The previous prime is 320279851. The next prime is 320279891. The reversal of 320279863 is 368972023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320279863 - 2²⁵ = 286725431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320279803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160139931 + 160139932.

It is an arithmetic number, because the mean of its divisors is an integer number (160139932).

Almost surely, 2^320279863 is an apocalyptic number.

320279863 is a deficient number, since it is larger than the sum of its proper divisors (1).

320279863 is an equidigital number, since it uses as much as digits as its factorization.

320279863 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 320279863 is about 17896.3645190860. The cubic root of 320279863 is about 684.1897201518.

The spelling of 320279863 in words is "three hundred twenty million, two hundred seventy-nine thousand, eight hundred sixty-three".