243444343 has 4 divisors (see below), whose sum is σ = 243702360. Its totient is φ = 243186328.

The previous prime is 243444337. The next prime is 243444373. The reversal of 243444343 is 343444342.

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 243444343 - 2¹⁷ = 243313271 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 (243444323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127588 + ... + 129481.

It is an arithmetic number, because the mean of its divisors is an integer number (60925590).

Almost surely, 2^243444343 is an apocalyptic number.

243444343 is a deficient number, since it is larger than the sum of its proper divisors (258017).

243444343 is an equidigital number, since it uses as much as digits as its factorization.

243444343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258016.

The product of its digits is 55296, while the sum is 31.

The square root of 243444343 is about 15602.7030670971. The cubic root of 243444343 is about 624.4052736204.

Adding to 243444343 its reverse (343444342), we get a palindrome (586888685).

Subtracting 243444343 from its reverse (343444342), we obtain a palindrome (99999999).

The spelling of 243444343 in words is "two hundred forty-three million, four hundred forty-four thousand, three hundred forty-three".