34128217 has 2 divisors, whose sum is σ = 34128218. Its totient is φ = 34128216.

The previous prime is 34128169. The next prime is 34128221. The reversal of 34128217 is 71282143.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30349081 + 3779136 = 5509^2 + 1944^2 .

It is a cyclic number.

It is not a de Polignac number, because 34128217 - 2⁷ = 34128089 is a prime.

It is not a weakly prime, because it can be changed into another prime (34128317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17064108 + 17064109.

It is an arithmetic number, because the mean of its divisors is an integer number (17064109).

Almost surely, 2^34128217 is an apocalyptic number.

It is an amenable number.

34128217 is a deficient number, since it is larger than the sum of its proper divisors (1).

34128217 is an equidigital number, since it uses as much as digits as its factorization.

34128217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2688, while the sum is 28.

The square root of 34128217 is about 5841.9360660658. The cubic root of 34128217 is about 324.3678980307.

The spelling of 34128217 in words is "thirty-four million, one hundred twenty-eight thousand, two hundred seventeen".