343606213 has 2 divisors, whose sum is σ = 343606214. Its totient is φ = 343606212.

The previous prime is 343606189. The next prime is 343606231. The reversal of 343606213 is 312606343.

Together with next prime (343606231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 341436484 + 2169729 = 18478^2 + 1473^2 .

It is a cyclic number.

It is not a de Polignac number, because 343606213 - 2⁹ = 343605701 is a prime.

It is a super-2 number, since 2×343606213² = 236130459224402738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343606253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171803106 + 171803107.

It is an arithmetic number, because the mean of its divisors is an integer number (171803107).

Almost surely, 2^343606213 is an apocalyptic number.

It is an amenable number.

343606213 is a deficient number, since it is larger than the sum of its proper divisors (1).

343606213 is an equidigital number, since it uses as much as digits as its factorization.

343606213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 343606213 is about 18536.6181651347. The cubic root of 343606213 is about 700.4121470837.

The spelling of 343606213 in words is "three hundred forty-three million, six hundred six thousand, two hundred thirteen".