320341313 has 2 divisors, whose sum is σ = 320341314. Its totient is φ = 320341312.

The previous prime is 320341289. The next prime is 320341339. The reversal of 320341313 is 313143023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 289782529 + 30558784 = 17023^2 + 5528^2 .

It is an emirp because it is prime and its reverse (313143023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320341313 - 2⁸ = 320341057 is a prime.

It is not a weakly prime, because it can be changed into another prime (320341393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160170656 + 160170657.

It is an arithmetic number, because the mean of its divisors is an integer number (160170657).

Almost surely, 2^320341313 is an apocalyptic number.

It is an amenable number.

320341313 is a deficient number, since it is larger than the sum of its proper divisors (1).

320341313 is an equidigital number, since it uses as much as digits as its factorization.

320341313 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 20.

The square root of 320341313 is about 17898.0812658788. The cubic root of 320341313 is about 684.2334743541.

Adding to 320341313 its reverse (313143023), we get a palindrome (633484336).

The spelling of 320341313 in words is "three hundred twenty million, three hundred forty-one thousand, three hundred thirteen".