30520297193 has 2 divisors, whose sum is σ = 30520297194. Its totient is φ = 30520297192.

The previous prime is 30520297147. The next prime is 30520297229. The reversal of 30520297193 is 39179202503.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30356789824 + 163507369 = 174232^2 + 12787^2 .

It is a cyclic number.

It is not a de Polignac number, because 30520297193 - 2²² = 30516102889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30520297193.

It is not a weakly prime, because it can be changed into another prime (30520297133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15260148596 + 15260148597.

It is an arithmetic number, because the mean of its divisors is an integer number (15260148597).

Almost surely, 2^30520297193 is an apocalyptic number.

It is an amenable number.

30520297193 is a deficient number, since it is larger than the sum of its proper divisors (1).

30520297193 is an equidigital number, since it uses as much as digits as its factorization.

30520297193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 102060, while the sum is 41.

Adding to 30520297193 its reverse (39179202503), we get a palindrome (69699499696).

The spelling of 30520297193 in words is "thirty billion, five hundred twenty million, two hundred ninety-seven thousand, one hundred ninety-three".