343018213 has 2 divisors, whose sum is σ = 343018214. Its totient is φ = 343018212.

The previous prime is 343018211. The next prime is 343018217. The reversal of 343018213 is 312810343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200024449 + 142993764 = 14143^2 + 11958^2 .

It is an emirp because it is prime and its reverse (312810343) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 343018213 - 2¹ = 343018211 is a prime.

It is a super-2 number, since 2×343018213² = 235322988899426738, which contains 22 as substring.

Together with 343018211, 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 (343018211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171509106 + 171509107.

It is an arithmetic number, because the mean of its divisors is an integer number (171509107).

Almost surely, 2^343018213 is an apocalyptic number.

It is an amenable number.

343018213 is a deficient number, since it is larger than the sum of its proper divisors (1).

343018213 is an equidigital number, since it uses as much as digits as its factorization.

343018213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 343018213 is about 18520.7508757070. The cubic root of 343018213 is about 700.0123895766.

Adding to 343018213 its reverse (312810343), we get a palindrome (655828556).

The spelling of 343018213 in words is "three hundred forty-three million, eighteen thousand, two hundred thirteen".