343322321 has 2 divisors, whose sum is σ = 343322322. Its totient is φ = 343322320.

The previous prime is 343322281. The next prime is 343322323. The reversal of 343322321 is 123223343.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 313467025 + 29855296 = 17705^2 + 5464^2 .

It is a cyclic number.

It is not a de Polignac number, because 343322321 - 2⁶ = 343322257 is a prime.

Together with 343322323, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (343322323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171661160 + 171661161.

It is an arithmetic number, because the mean of its divisors is an integer number (171661161).

Almost surely, 2^343322321 is an apocalyptic number.

It is an amenable number.

343322321 is a deficient number, since it is larger than the sum of its proper divisors (1).

343322321 is an equidigital number, since it uses as much as digits as its factorization.

343322321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 23.

The square root of 343322321 is about 18528.9589831701. The cubic root of 343322321 is about 700.2191973400.

Adding to 343322321 its reverse (123223343), we get a palindrome (466545664).

The spelling of 343322321 in words is "three hundred forty-three million, three hundred twenty-two thousand, three hundred twenty-one".