243303343 has 4 divisors (see below), whose sum is σ = 243343800. Its totient is φ = 243262888.

The previous prime is 243303323. The next prime is 243303377. The reversal of 243303343 is 343303342.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 243303343 - 2⁵ = 243303311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243303323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9205 + ... + 23902.

It is an arithmetic number, because the mean of its divisors is an integer number (60835950).

Almost surely, 2^243303343 is an apocalyptic number.

243303343 is a deficient number, since it is larger than the sum of its proper divisors (40457).

243303343 is an equidigital number, since it uses as much as digits as its factorization.

243303343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40456.

The product of its (nonzero) digits is 7776, while the sum is 25.

The square root of 243303343 is about 15598.1839648082. The cubic root of 243303343 is about 624.2847010281.

Adding to 243303343 its reverse (343303342), we get a palindrome (586606685).

Subtracting 243303343 from its reverse (343303342), we obtain a palindrome (99999999).

The spelling of 243303343 in words is "two hundred forty-three million, three hundred three thousand, three hundred forty-three".