30405423397 has 2 divisors, whose sum is σ = 30405423398. Its totient is φ = 30405423396.

The previous prime is 30405423361. The next prime is 30405423401. The reversal of 30405423397 is 79332450403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25989953796 + 4415469601 = 161214^2 + 66449^2 .

It is an emirp because it is prime and its reverse (79332450403) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30405423397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30405823397) 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, 15202711698 + 15202711699.

It is an arithmetic number, because the mean of its divisors is an integer number (15202711699).

Almost surely, 2^30405423397 is an apocalyptic number.

It is an amenable number.

30405423397 is a deficient number, since it is larger than the sum of its proper divisors (1).

30405423397 is an equidigital number, since it uses as much as digits as its factorization.

30405423397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 40.

The spelling of 30405423397 in words is "thirty billion, four hundred five million, four hundred twenty-three thousand, three hundred ninety-seven".