320312299 has 2 divisors, whose sum is σ = 320312300. Its totient is φ = 320312298.

The previous prime is 320312287. The next prime is 320312353. The reversal of 320312299 is 992213023.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320312299 - 2¹¹ = 320310251 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 320312299.

It is not a weakly prime, because it can be changed into another prime (320312269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160156149 + 160156150.

It is an arithmetic number, because the mean of its divisors is an integer number (160156150).

Almost surely, 2^320312299 is an apocalyptic number.

320312299 is a deficient number, since it is larger than the sum of its proper divisors (1).

320312299 is an equidigital number, since it uses as much as digits as its factorization.

320312299 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 320312299 is about 17897.2707137150. The cubic root of 320312299 is about 684.2128162324.

The spelling of 320312299 in words is "three hundred twenty million, three hundred twelve thousand, two hundred ninety-nine".