320336413 has 2 divisors, whose sum is σ = 320336414. Its totient is φ = 320336412.

The previous prime is 320336411. The next prime is 320336449. The reversal of 320336413 is 314633023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 303386724 + 16949689 = 17418^2 + 4117^2 .

It is a cyclic number.

It is not a de Polignac number, because 320336413 - 2¹ = 320336411 is a prime.

Together with 320336411, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320336411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160168206 + 160168207.

It is an arithmetic number, because the mean of its divisors is an integer number (160168207).

Almost surely, 2^320336413 is an apocalyptic number.

It is an amenable number.

320336413 is a deficient number, since it is larger than the sum of its proper divisors (1).

320336413 is an equidigital number, since it uses as much as digits as its factorization.

320336413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 25.

The square root of 320336413 is about 17897.9443791738. The cubic root of 320336413 is about 684.2299856157.

Adding to 320336413 its reverse (314633023), we get a palindrome (634969436).

The spelling of 320336413 in words is "three hundred twenty million, three hundred thirty-six thousand, four hundred thirteen".