343353217 has 2 divisors, whose sum is σ = 343353218. Its totient is φ = 343353216.

The previous prime is 343353203. The next prime is 343353253. The reversal of 343353217 is 712353343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 229098496 + 114254721 = 15136^2 + 10689^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-343353217 is a prime.

It is not a weakly prime, because it can be changed into another prime (343353287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171676608 + 171676609.

It is an arithmetic number, because the mean of its divisors is an integer number (171676609).

Almost surely, 2^343353217 is an apocalyptic number.

It is an amenable number.

343353217 is a deficient number, since it is larger than the sum of its proper divisors (1).

343353217 is an equidigital number, since it uses as much as digits as its factorization.

343353217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 31.

The square root of 343353217 is about 18529.7926863740. The cubic root of 343353217 is about 700.2402012403.

The spelling of 343353217 in words is "three hundred forty-three million, three hundred fifty-three thousand, two hundred seventeen".