30305521013 has 2 divisors, whose sum is σ = 30305521014. Its totient is φ = 30305521012.

The previous prime is 30305520967. The next prime is 30305521021. The reversal of 30305521013 is 31012550303.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30275304004 + 30217009 = 173998^2 + 5497^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30305521013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30305521013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30305521033) 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, 15152760506 + 15152760507.

It is an arithmetic number, because the mean of its divisors is an integer number (15152760507).

Almost surely, 2^30305521013 is an apocalyptic number.

It is an amenable number.

30305521013 is a deficient number, since it is larger than the sum of its proper divisors (1).

30305521013 is an equidigital number, since it uses as much as digits as its factorization.

30305521013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1350, while the sum is 23.

The spelling of 30305521013 in words is "thirty billion, three hundred five million, five hundred twenty-one thousand, thirteen".