343391209 has 8 divisors (see below), whose sum is σ = 394616768. Its totient is φ = 292708080.

The previous prime is 343391189. The next prime is 343391231. The reversal of 343391209 is 902193343.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 343391209 - 2¹¹ = 343389161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (343391239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134247 + ... + 136780.

It is an arithmetic number, because the mean of its divisors is an integer number (49327096).

Almost surely, 2^343391209 is an apocalyptic number.

It is an amenable number.

343391209 is a deficient number, since it is larger than the sum of its proper divisors (51225559).

343391209 is a wasteful number, since it uses less digits than its factorization.

343391209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271215.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 343391209 is about 18530.8178178946. The cubic root of 343391209 is about 700.2660274578.

The spelling of 343391209 in words is "three hundred forty-three million, three hundred ninety-one thousand, two hundred nine".