It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-343355 is a prime.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 343355.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 343355.
It is an unprimeable number.
2343355 is an apocalyptic number.
343355 is a wasteful number, since it uses less digits than its factorization.
343355 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1645.
The square root of 343355 is about 585.9650160206. The cubic root of 343355 is about 70.0241413331.
Adding to 343355 its reverse (553343), we get a palindrome (896698).
The spelling of 343355 in words is "three hundred forty-three thousand, three hundred fifty-five".