243434356223 has 4 divisors (see below), whose sum is σ = 244015345560. Its totient is φ = 242853366888.

The previous prime is 243434356219. The next prime is 243434356229. The reversal of 243434356223 is 322653434342.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322653434342 = 2 ⋅161326717171.

It is a cyclic number.

It is not a de Polignac number, because 243434356223 - 2² = 243434356219 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 (243434356229) 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, 290494040 + ... + 290494877.

It is an arithmetic number, because the mean of its divisors is an integer number (61003836390).

Almost surely, 2^243434356223 is an apocalyptic number.

243434356223 is a deficient number, since it is larger than the sum of its proper divisors (580989337).

243434356223 is an equidigital number, since it uses as much as digits as its factorization.

243434356223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580989336.

The product of its digits is 1244160, while the sum is 41.

The spelling of 243434356223 in words is "two hundred forty-three billion, four hundred thirty-four million, three hundred fifty-six thousand, two hundred twenty-three".