30686280613 has 2 divisors, whose sum is σ = 30686280614. Its totient is φ = 30686280612.

The previous prime is 30686280607. The next prime is 30686280637. The reversal of 30686280613 is 31608268603.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30214435329 + 471845284 = 173823^2 + 21722^2 .

It is an emirp because it is prime and its reverse (31608268603) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30686280613 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30686280613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30686286613) 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, 15343140306 + 15343140307.

It is an arithmetic number, because the mean of its divisors is an integer number (15343140307).

Almost surely, 2^30686280613 is an apocalyptic number.

It is an amenable number.

30686280613 is a deficient number, since it is larger than the sum of its proper divisors (1).

30686280613 is an equidigital number, since it uses as much as digits as its factorization.

30686280613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 43.

The spelling of 30686280613 in words is "thirty billion, six hundred eighty-six million, two hundred eighty thousand, six hundred thirteen".