243123424343 has 4 divisors (see below), whose sum is σ = 243125951088. Its totient is φ = 243120897600.

The previous prime is 243123424331. The next prime is 243123424367. The reversal of 243123424343 is 343424321342.

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 243123424343 - 2¹⁴ = 243123407959 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 (243123424303) 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, 1113083 + ... + 1313468.

It is an arithmetic number, because the mean of its divisors is an integer number (60781487772).

Almost surely, 2^243123424343 is an apocalyptic number.

243123424343 is a deficient number, since it is larger than the sum of its proper divisors (2526745).

243123424343 is a wasteful number, since it uses less digits than its factorization.

243123424343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2526744.

The product of its digits is 165888, while the sum is 35.

Adding to 243123424343 its reverse (343424321342), we get a palindrome (586547745685).

The spelling of 243123424343 in words is "two hundred forty-three billion, one hundred twenty-three million, four hundred twenty-four thousand, three hundred forty-three".