30413999921 has 2 divisors, whose sum is σ = 30413999922. Its totient is φ = 30413999920.

The previous prime is 30413999897. The next prime is 30413999933. The reversal of 30413999921 is 12999931403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20345884321 + 10068115600 = 142639^2 + 100340^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30413999921 is a prime.

It is a super-2 number, since 2×30413999921² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30413999921.

It is not a weakly prime, because it can be changed into another prime (30413993921) 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, 15206999960 + 15206999961.

It is an arithmetic number, because the mean of its divisors is an integer number (15206999961).

Almost surely, 2^30413999921 is an apocalyptic number.

It is an amenable number.

30413999921 is a deficient number, since it is larger than the sum of its proper divisors (1).

30413999921 is an equidigital number, since it uses as much as digits as its factorization.

30413999921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 472392, while the sum is 50.

The spelling of 30413999921 in words is "thirty billion, four hundred thirteen million, nine hundred ninety-nine thousand, nine hundred twenty-one".