343543 has 2 divisors, whose sum is σ = 343544. Its totient is φ = 343542.

The previous prime is 343531. The next prime is 343547. The reversal of 343543 is 345343.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-343543 is a prime.

343543 is a lucky number.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171771 + 171772.

It is an arithmetic number, because the mean of its divisors is an integer number (171772).

2³⁴³⁵⁴³ is an apocalyptic number.

343543 is a deficient number, since it is larger than the sum of its proper divisors (1).

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 product of its digits is 2160, while the sum is 22.

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".