243234423513 has 6 divisors (see below), whose sum is σ = 351338611754. Its totient is φ = 162156282336.

The previous prime is 243234423511. The next prime is 243234423527. The reversal of 243234423513 is 315324432342.

243234423513 is a `hidden beast` number, since 243 + 2 + 344 + 23 + 51 + 3 = 666.

243234423513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 239637662784 + 3596760729 = 489528^2 + 59973^2 .

It is not a de Polignac number, because 243234423513 - 2¹ = 243234423511 is a prime.

It is a super-2 number, since 2×243234423513² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243234423511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13513023520 + ... + 13513023537.

Almost surely, 2^243234423513 is an apocalyptic number.

It is an amenable number.

243234423513 is a deficient number, since it is larger than the sum of its proper divisors (108104188241).

243234423513 is a wasteful number, since it uses less digits than its factorization.

243234423513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27026047063 (or 27026047060 counting only the distinct ones).

The product of its digits is 207360, while the sum is 36.

Adding to 243234423513 its reverse (315324432342), we get a palindrome (558558855855).

The spelling of 243234423513 in words is "two hundred forty-three billion, two hundred thirty-four million, four hundred twenty-three thousand, five hundred thirteen".