321423299 has 2 divisors, whose sum is σ = 321423300. Its totient is φ = 321423298.

The previous prime is 321423293. The next prime is 321423331. The reversal of 321423299 is 992324123.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 321423299 - 2¹⁶ = 321357763 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (321423293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160711649 + 160711650.

It is an arithmetic number, because the mean of its divisors is an integer number (160711650).

Almost surely, 2^321423299 is an apocalyptic number.

321423299 is a deficient number, since it is larger than the sum of its proper divisors (1).

321423299 is an equidigital number, since it uses as much as digits as its factorization.

321423299 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 35.

The square root of 321423299 is about 17928.2820984053. The cubic root of 321423299 is about 685.0029651602.

The spelling of 321423299 in words is "three hundred twenty-one million, four hundred twenty-three thousand, two hundred ninety-nine".