34238821217 has 2 divisors, whose sum is σ = 34238821218. Its totient is φ = 34238821216.

The previous prime is 34238821207. The next prime is 34238821271. The reversal of 34238821217 is 71212883243.

Together with next prime (34238821271) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28801823521 + 5436997696 = 169711^2 + 73736^2 .

It is a cyclic number.

It is not a de Polignac number, because 34238821217 - 2²² = 34234626913 is a prime.

It is a super-2 number, since 2×34238821217² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (34238821207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17119410608 + 17119410609.

It is an arithmetic number, because the mean of its divisors is an integer number (17119410609).

Almost surely, 2^34238821217 is an apocalyptic number.

It is an amenable number.

34238821217 is a deficient number, since it is larger than the sum of its proper divisors (1).

34238821217 is an equidigital number, since it uses as much as digits as its factorization.

34238821217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024, while the sum is 41.

The spelling of 34238821217 in words is "thirty-four billion, two hundred thirty-eight million, eight hundred twenty-one thousand, two hundred seventeen".