343011209 has 2 divisors, whose sum is σ = 343011210. Its totient is φ = 343011208.

The previous prime is 343011197. The next prime is 343011233. The reversal of 343011209 is 902110343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 298321984 + 44689225 = 17272^2 + 6685^2 .

It is an emirp because it is prime and its reverse (902110343) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 343011209 - 2²⁴ = 326233993 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (343011239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171505604 + 171505605.

It is an arithmetic number, because the mean of its divisors is an integer number (171505605).

Almost surely, 2^343011209 is an apocalyptic number.

It is an amenable number.

343011209 is a deficient number, since it is larger than the sum of its proper divisors (1).

343011209 is an equidigital number, since it uses as much as digits as its factorization.

343011209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 343011209 is about 18520.5617895354. The cubic root of 343011209 is about 700.0076250870.

The spelling of 343011209 in words is "three hundred forty-three million, eleven thousand, two hundred nine".