320282321 has 2 divisors, whose sum is σ = 320282322. Its totient is φ = 320282320.

The previous prime is 320282273. The next prime is 320282327. The reversal of 320282321 is 123282023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 299670721 + 20611600 = 17311^2 + 4540^2 .

It is an emirp because it is prime and its reverse (123282023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320282321 - 2⁶ = 320282257 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (320282327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160141160 + 160141161.

It is an arithmetic number, because the mean of its divisors is an integer number (160141161).

Almost surely, 2^320282321 is an apocalyptic number.

It is an amenable number.

320282321 is a deficient number, since it is larger than the sum of its proper divisors (1).

320282321 is an equidigital number, since it uses as much as digits as its factorization.

320282321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 320282321 is about 17896.4331921196. The cubic root of 320282321 is about 684.1914704273.

The spelling of 320282321 in words is "three hundred twenty million, two hundred eighty-two thousand, three hundred twenty-one".