243434202023 has 2 divisors, whose sum is σ = 243434202024. Its totient is φ = 243434202022.

The previous prime is 243434202007. The next prime is 243434202047. The reversal of 243434202023 is 320202434342.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243434202023 - 2⁴ = 243434202007 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243434202073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121717101011 + 121717101012.

It is an arithmetic number, because the mean of its divisors is an integer number (121717101012).

Almost surely, 2^243434202023 is an apocalyptic number.

243434202023 is a deficient number, since it is larger than the sum of its proper divisors (1).

243434202023 is an equidigital number, since it uses as much as digits as its factorization.

243434202023 is an evil number, because the sum of its binary digits is even.

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

Adding to 243434202023 its reverse (320202434342), we get a palindrome (563636636365).

The spelling of 243434202023 in words is "two hundred forty-three billion, four hundred thirty-four million, two hundred two thousand, twenty-three".