243343 has 2 divisors, whose sum is σ = 243344. Its totient is φ = 243342.

The previous prime is 243311. The next prime is 243367. The reversal of 243343 is 343342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243343 - 2⁵ = 243311 is a prime.

It is a d-powerful number, because it can be written as 2⁹ + 4³ + 3 + 3⁴ + 4⁸ + 3¹¹ .

It is equal to p₂₁₄₉₃ and since 243343 and 21493 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243343.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121671 + 121672.

It is an arithmetic number, because the mean of its divisors is an integer number (121672).

2²⁴³³⁴³ is an apocalyptic number.

243343 is a deficient number, since it is larger than the sum of its proper divisors (1).

243343 is an equidigital number, since it uses as much as digits as its factorization.

243343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 19.

The square root of 243343 is about 493.2980843263. The cubic root of 243343 is about 62.4318617418.

Adding to 243343 its reverse (343342), we get a palindrome (586685).

Subtracting 243343 from its reverse (343342), we obtain a palindrome (99999).

The spelling of 243343 in words is "two hundred forty-three thousand, three hundred forty-three", and thus it is an iban number.