320563211 has 2 divisors, whose sum is σ = 320563212. Its totient is φ = 320563210.

The previous prime is 320563207. The next prime is 320563261. The reversal of 320563211 is 112365023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320563211 - 2² = 320563207 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (320563261) 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, 160281605 + 160281606.

It is an arithmetic number, because the mean of its divisors is an integer number (160281606).

Almost surely, 2^320563211 is an apocalyptic number.

320563211 is a deficient number, since it is larger than the sum of its proper divisors (1).

320563211 is an equidigital number, since it uses as much as digits as its factorization.

320563211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 320563211 is about 17904.2791253935. The cubic root of 320563211 is about 684.3914256700.

The spelling of 320563211 in words is "three hundred twenty million, five hundred sixty-three thousand, two hundred eleven".