34305221 has 2 divisors, whose sum is σ = 34305222. Its totient is φ = 34305220.

The previous prime is 34305217. The next prime is 34305247. The reversal of 34305221 is 12250343.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20160100 + 14145121 = 4490^2 + 3761^2 .

It is a cyclic number.

It is not a de Polignac number, because 34305221 - 2² = 34305217 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 34305193 and 34305202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34305281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17152610 + 17152611.

It is an arithmetic number, because the mean of its divisors is an integer number (17152611).

Almost surely, 2^34305221 is an apocalyptic number.

It is an amenable number.

34305221 is a deficient number, since it is larger than the sum of its proper divisors (1).

34305221 is an equidigital number, since it uses as much as digits as its factorization.

34305221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 34305221 is about 5857.0659036757. The cubic root of 34305221 is about 324.9277030507.

Adding to 34305221 its reverse (12250343), we get a palindrome (46555564).

The spelling of 34305221 in words is "thirty-four million, three hundred five thousand, two hundred twenty-one".