13243732217 has 2 divisors, whose sum is σ = 13243732218. Its totient is φ = 13243732216.

The previous prime is 13243732213. The next prime is 13243732247. The reversal of 13243732217 is 71223734231.

13243732217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12364550416 + 879181801 = 111196^2 + 29651^2 .

It is a cyclic number.

It is not a de Polignac number, because 13243732217 - 2² = 13243732213 is a prime.

It is a super-3 number, since 3×13243732217³ (a number of 31 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (13243732213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6621866108 + 6621866109.

It is an arithmetic number, because the mean of its divisors is an integer number (6621866109).

Almost surely, 2^13243732217 is an apocalyptic number.

It is an amenable number.

13243732217 is a deficient number, since it is larger than the sum of its proper divisors (1).

13243732217 is an equidigital number, since it uses as much as digits as its factorization.

13243732217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 35.

The spelling of 13243732217 in words is "thirteen billion, two hundred forty-three million, seven hundred thirty-two thousand, two hundred seventeen".