It is a strong prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-343543 is a prime.
343543 is a lucky number.
It is a plaindrome in base 15.
It is a congruent number.
2343543 is an apocalyptic number.
343543 is an equidigital number, since it uses as much as digits as its factorization.
343543 is an evil number, because the sum of its binary digits is even.
The square root of 343543 is about 586.1254132010. The cubic root of 343543 is about 70.0369193002.
Adding to 343543 its reverse (345343), we get a palindrome (688886).
The spelling of 343543 in words is "three hundred forty-three thousand, five hundred forty-three".