33243234217 has 2 divisors, whose sum is σ = 33243234218. Its totient is φ = 33243234216.

The previous prime is 33243234197. The next prime is 33243234223. The reversal of 33243234217 is 71243234233.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29070591001 + 4172643216 = 170501^2 + 64596^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33243234217 is a prime.

It is a super-2 number, since 2×33243234217² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33243234247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16621617108 + 16621617109.

It is an arithmetic number, because the mean of its divisors is an integer number (16621617109).

Almost surely, 2^33243234217 is an apocalyptic number.

It is an amenable number.

33243234217 is a deficient number, since it is larger than the sum of its proper divisors (1).

33243234217 is an equidigital number, since it uses as much as digits as its factorization.

33243234217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 34.

The spelling of 33243234217 in words is "thirty-three billion, two hundred forty-three million, two hundred thirty-four thousand, two hundred seventeen".