320772163 has 2 divisors, whose sum is σ = 320772164. Its totient is φ = 320772162.

The previous prime is 320772157. The next prime is 320772223. The reversal of 320772163 is 361277023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320772163 - 2²⁵ = 287217731 is a prime.

It is not a weakly prime, because it can be changed into another prime (320772143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160386081 + 160386082.

It is an arithmetic number, because the mean of its divisors is an integer number (160386082).

Almost surely, 2^320772163 is an apocalyptic number.

320772163 is a deficient number, since it is larger than the sum of its proper divisors (1).

320772163 is an equidigital number, since it uses as much as digits as its factorization.

320772163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 31.

The square root of 320772163 is about 17910.1134278932. The cubic root of 320772163 is about 684.5400951492.

The spelling of 320772163 in words is "three hundred twenty million, seven hundred seventy-two thousand, one hundred sixty-three".