243234423511 has 2 divisors, whose sum is σ = 243234423512. Its totient is φ = 243234423510.

The previous prime is 243234423503. The next prime is 243234423527. The reversal of 243234423511 is 115324432342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243234423511 - 2³ = 243234423503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243234423541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121617211755 + 121617211756.

It is an arithmetic number, because the mean of its divisors is an integer number (121617211756).

Almost surely, 2^243234423511 is an apocalyptic number.

243234423511 is a deficient number, since it is larger than the sum of its proper divisors (1).

243234423511 is an equidigital number, since it uses as much as digits as its factorization.

243234423511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 34.

Adding to 243234423511 its reverse (115324432342), we get a palindrome (358558855853).

The spelling of 243234423511 in words is "two hundred forty-three billion, two hundred thirty-four million, four hundred twenty-three thousand, five hundred eleven".