30320393 has 2 divisors, whose sum is σ = 30320394. Its totient is φ = 30320392.

The previous prime is 30320377. The next prime is 30320453. The reversal of 30320393 is 39302303.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27541504 + 2778889 = 5248^2 + 1667^2 .

It is an emirp because it is prime and its reverse (39302303) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30320393 - 2⁴ = 30320377 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 (30320993) 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, 15160196 + 15160197.

It is an arithmetic number, because the mean of its divisors is an integer number (15160197).

Almost surely, 2^30320393 is an apocalyptic number.

It is an amenable number.

30320393 is a deficient number, since it is larger than the sum of its proper divisors (1).

30320393 is an equidigital number, since it uses as much as digits as its factorization.

30320393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 23.

The square root of 30320393 is about 5506.3956450658. The cubic root of 30320393 is about 311.8254865888.

Adding to 30320393 its reverse (39302303), we get a palindrome (69622696).

The spelling of 30320393 in words is "thirty million, three hundred twenty thousand, three hundred ninety-three".