243203222423 has 4 divisors (see below), whose sum is σ = 277946539920. Its totient is φ = 208459904928.

The previous prime is 243203222413. The next prime is 243203222459. The reversal of 243203222423 is 324222302342.

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 243203222423 - 2³⁰ = 242129480599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243203222413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17371658738 + ... + 17371658751.

It is an arithmetic number, because the mean of its divisors is an integer number (69486634980).

Almost surely, 2^243203222423 is an apocalyptic number.

243203222423 is a deficient number, since it is larger than the sum of its proper divisors (34743317497).

243203222423 is an equidigital number, since it uses as much as digits as its factorization.

243203222423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34743317496.

The product of its (nonzero) digits is 27648, while the sum is 29.

Adding to 243203222423 its reverse (324222302342), we get a palindrome (567425524765).

The spelling of 243203222423 in words is "two hundred forty-three billion, two hundred three million, two hundred twenty-two thousand, four hundred twenty-three".