30123040393 has 2 divisors, whose sum is σ = 30123040394. Its totient is φ = 30123040392.

The previous prime is 30123040379. The next prime is 30123040403. The reversal of 30123040393 is 39304032103.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30002743369 + 120297024 = 173213^2 + 10968^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30123040393 is a prime.

It is not a weakly prime, because it can be changed into another prime (30123040193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15061520196 + 15061520197.

It is an arithmetic number, because the mean of its divisors is an integer number (15061520197).

Almost surely, 2^30123040393 is an apocalyptic number.

It is an amenable number.

30123040393 is a deficient number, since it is larger than the sum of its proper divisors (1).

30123040393 is an equidigital number, since it uses as much as digits as its factorization.

30123040393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 30123040393 its reverse (39304032103), we get a palindrome (69427072496).

The spelling of 30123040393 in words is "thirty billion, one hundred twenty-three million, forty thousand, three hundred ninety-three".