320012239 has 2 divisors, whose sum is σ = 320012240. Its totient is φ = 320012238.

The previous prime is 320012213. The next prime is 320012263. The reversal of 320012239 is 932210023.

It is a strong prime.

It is an emirp because it is prime and its reverse (932210023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320012239 - 2⁷ = 320012111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320012279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160006119 + 160006120.

It is an arithmetic number, because the mean of its divisors is an integer number (160006120).

Almost surely, 2^320012239 is an apocalyptic number.

320012239 is a deficient number, since it is larger than the sum of its proper divisors (1).

320012239 is an equidigital number, since it uses as much as digits as its factorization.

320012239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 320012239 is about 17888.8859071771. The cubic root of 320012239 is about 683.9990987243. Note that the first 3 decimals are identical.

The spelling of 320012239 in words is "three hundred twenty million, twelve thousand, two hundred thirty-nine".