220320329 has 2 divisors, whose sum is σ = 220320330. Its totient is φ = 220320328.

The previous prime is 220320319. The next prime is 220320403. The reversal of 220320329 is 923023022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 173712400 + 46607929 = 13180^2 + 6827^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220320329 is a prime.

It is not a weakly prime, because it can be changed into another prime (220320319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110160164 + 110160165.

It is an arithmetic number, because the mean of its divisors is an integer number (110160165).

Almost surely, 2^220320329 is an apocalyptic number.

It is an amenable number.

220320329 is a deficient number, since it is larger than the sum of its proper divisors (1).

220320329 is an equidigital number, since it uses as much as digits as its factorization.

220320329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 220320329 is about 14843.1913347501. The cubic root of 220320329 is about 603.9739263703.

The spelling of 220320329 in words is "two hundred twenty million, three hundred twenty thousand, three hundred twenty-nine".