343321313 has 2 divisors, whose sum is σ = 343321314. Its totient is φ = 343321312.

The previous prime is 343321309. The next prime is 343321339. The reversal of 343321313 is 313123343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178275904 + 165045409 = 13352^2 + 12847^2 .

It is a cyclic number.

It is not a de Polignac number, because 343321313 - 2² = 343321309 is a prime.

It is not a weakly prime, because it can be changed into another prime (343324313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171660656 + 171660657.

It is an arithmetic number, because the mean of its divisors is an integer number (171660657).

Almost surely, 2^343321313 is an apocalyptic number.

It is an amenable number.

343321313 is a deficient number, since it is larger than the sum of its proper divisors (1).

343321313 is an equidigital number, since it uses as much as digits as its factorization.

343321313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 23.

The square root of 343321313 is about 18528.9317824855. The cubic root of 343321313 is about 700.2185120543.

Adding to 343321313 its reverse (313123343), we get a palindrome (656444656).

The spelling of 343321313 in words is "three hundred forty-three million, three hundred twenty-one thousand, three hundred thirteen".