320302109 has 2 divisors, whose sum is σ = 320302110. Its totient is φ = 320302108.

The previous prime is 320302093. The next prime is 320302111. The reversal of 320302109 is 901203023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 317908900 + 2393209 = 17830^2 + 1547^2 .

It is a cyclic number.

It is not a de Polignac number, because 320302109 - 2⁴ = 320302093 is a prime.

Together with 320302111, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320302139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160151054 + 160151055.

It is an arithmetic number, because the mean of its divisors is an integer number (160151055).

Almost surely, 2^320302109 is an apocalyptic number.

It is an amenable number.

320302109 is a deficient number, since it is larger than the sum of its proper divisors (1).

320302109 is an equidigital number, since it uses as much as digits as its factorization.

320302109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 320302109 is about 17896.9860311730. The cubic root of 320302109 is about 684.2055606025.

The spelling of 320302109 in words is "three hundred twenty million, three hundred two thousand, one hundred nine".