243143423311 has 2 divisors, whose sum is σ = 243143423312. Its totient is φ = 243143423310.

The previous prime is 243143423297. The next prime is 243143423351. The reversal of 243143423311 is 113324341342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243143423311 - 2⁷ = 243143423183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243143423351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121571711655 + 121571711656.

It is an arithmetic number, because the mean of its divisors is an integer number (121571711656).

Almost surely, 2^243143423311 is an apocalyptic number.

243143423311 is a deficient number, since it is larger than the sum of its proper divisors (1).

243143423311 is an equidigital number, since it uses as much as digits as its factorization.

243143423311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 31.

Adding to 243143423311 its reverse (113324341342), we get a palindrome (356467764653).

The spelling of 243143423311 in words is "two hundred forty-three billion, one hundred forty-three million, four hundred twenty-three thousand, three hundred eleven".