30223073 has 2 divisors, whose sum is σ = 30223074. Its totient is φ = 30223072.

The previous prime is 30223069. The next prime is 30223099. The reversal of 30223073 is 37032203.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30162064 + 61009 = 5492^2 + 247^2 .

It is a cyclic number.

It is not a de Polignac number, because 30223073 - 2² = 30223069 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 (30223033) 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, 15111536 + 15111537.

It is an arithmetic number, because the mean of its divisors is an integer number (15111537).

Almost surely, 2^30223073 is an apocalyptic number.

It is an amenable number.

30223073 is a deficient number, since it is larger than the sum of its proper divisors (1).

30223073 is an equidigital number, since it uses as much as digits as its factorization.

30223073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 20.

The square root of 30223073 is about 5497.5515459157. The cubic root of 30223073 is about 311.4915047405.

Adding to 30223073 its reverse (37032203), we get a palindrome (67255276).

The spelling of 30223073 in words is "thirty million, two hundred twenty-three thousand, seventy-three".