320304469 has 2 divisors, whose sum is σ = 320304470. Its totient is φ = 320304468.

The previous prime is 320304443. The next prime is 320304499. The reversal of 320304469 is 964403023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 176544369 + 143760100 = 13287^2 + 11990^2 .

It is an emirp because it is prime and its reverse (964403023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320304469 - 2¹⁵ = 320271701 is a prime.

It is a super-2 number, since 2×320304469² = 205189905722743922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 320304469.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320304499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160152234 + 160152235.

It is an arithmetic number, because the mean of its divisors is an integer number (160152235).

Almost surely, 2^320304469 is an apocalyptic number.

It is an amenable number.

320304469 is a deficient number, since it is larger than the sum of its proper divisors (1).

320304469 is an equidigital number, since it uses as much as digits as its factorization.

320304469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 320304469 is about 17897.0519639409. The cubic root of 320304469 is about 684.2072410172.

The spelling of 320304469 in words is "three hundred twenty million, three hundred four thousand, four hundred sixty-nine".