30217073 has 2 divisors, whose sum is σ = 30217074. Its totient is φ = 30217072.

The previous prime is 30217037. The next prime is 30217081. The reversal of 30217073 is 37071203.

Together with previous prime (30217037) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30217009 + 64 = 5497^2 + 8^2 .

It is a cyclic number.

It is not a de Polignac number, because 30217073 - 2¹⁰ = 30216049 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (30217093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15108536 + 15108537.

It is an arithmetic number, because the mean of its divisors is an integer number (15108537).

Almost surely, 2^30217073 is an apocalyptic number.

It is an amenable number.

30217073 is a deficient number, since it is larger than the sum of its proper divisors (1).

30217073 is an equidigital number, since it uses as much as digits as its factorization.

30217073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 882, while the sum is 23.

The square root of 30217073 is about 5497.0058213540. The cubic root of 30217073 is about 311.4708905481.

Adding to 30217073 its reverse (37071203), we get a palindrome (67288276).

The spelling of 30217073 in words is "thirty million, two hundred seventeen thousand, seventy-three".