243242434223 has 4 divisors (see below), whose sum is σ = 247831914168. Its totient is φ = 238652954280.

The previous prime is 243242434189. The next prime is 243242434243. The reversal of 243242434223 is 322434242342.

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 243242434223 - 2¹⁸ = 243242172079 is a prime.

It is a super-2 number, since 2×243242434223² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243242434243) 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, 2294739893 + ... + 2294739998.

It is an arithmetic number, because the mean of its divisors is an integer number (61957978542).

Almost surely, 2^243242434223 is an apocalyptic number.

243242434223 is a deficient number, since it is larger than the sum of its proper divisors (4589479945).

243242434223 is an equidigital number, since it uses as much as digits as its factorization.

243242434223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4589479944.

The product of its digits is 221184, while the sum is 35.

Adding to 243242434223 its reverse (322434242342), we get a palindrome (565676676565).

The spelling of 243242434223 in words is "two hundred forty-three billion, two hundred forty-two million, four hundred thirty-four thousand, two hundred twenty-three".