343340009 has 2 divisors, whose sum is σ = 343340010. Its totient is φ = 343340008.

The previous prime is 343339999. The next prime is 343340047. The reversal of 343340009 is 900043343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 338376025 + 4963984 = 18395^2 + 2228^2 .

It is a cyclic number.

It is not a de Polignac number, because 343340009 - 2²⁴ = 326562793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 343340009.

It is not a weakly prime, because it can be changed into another prime (343340059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171670004 + 171670005.

It is an arithmetic number, because the mean of its divisors is an integer number (171670005).

Almost surely, 2^343340009 is an apocalyptic number.

It is an amenable number.

343340009 is a deficient number, since it is larger than the sum of its proper divisors (1).

343340009 is an equidigital number, since it uses as much as digits as its factorization.

343340009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 343340009 is about 18529.4362839240. The cubic root of 343340009 is about 700.2312222543.

The spelling of 343340009 in words is "three hundred forty-three million, three hundred forty thousand, nine".