343120213 has 2 divisors, whose sum is σ = 343120214. Its totient is φ = 343120212.

The previous prime is 343120201. The next prime is 343120229. The reversal of 343120213 is 312021343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 314636644 + 28483569 = 17738^2 + 5337^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-343120213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343120243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171560106 + 171560107.

It is an arithmetic number, because the mean of its divisors is an integer number (171560107).

Almost surely, 2^343120213 is an apocalyptic number.

It is an amenable number.

343120213 is a deficient number, since it is larger than the sum of its proper divisors (1).

343120213 is an equidigital number, since it uses as much as digits as its factorization.

343120213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 343120213 is about 18523.5043390823. The cubic root of 343120213 is about 700.0817679992.

Adding to 343120213 its reverse (312021343), we get a palindrome (655141556).

The spelling of 343120213 in words is "three hundred forty-three million, one hundred twenty thousand, two hundred thirteen".