243431423423 has 2 divisors, whose sum is σ = 243431423424. Its totient is φ = 243431423422.

The previous prime is 243431423407. The next prime is 243431423533. The reversal of 243431423423 is 324324134342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243431423423 - 2⁴ = 243431423407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243431425423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121715711711 + 121715711712.

It is an arithmetic number, because the mean of its divisors is an integer number (121715711712).

Almost surely, 2^243431423423 is an apocalyptic number.

243431423423 is a deficient number, since it is larger than the sum of its proper divisors (1).

243431423423 is an equidigital number, since it uses as much as digits as its factorization.

243431423423 is an evil number, because the sum of its binary digits is even.

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

Adding to 243431423423 its reverse (324324134342), we get a palindrome (567755557765).

The spelling of 243431423423 in words is "two hundred forty-three billion, four hundred thirty-one million, four hundred twenty-three thousand, four hundred twenty-three".