30203413021 has 2 divisors, whose sum is σ = 30203413022. Its totient is φ = 30203413020.

The previous prime is 30203413013. The next prime is 30203413049. The reversal of 30203413021 is 12031430203.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24183360100 + 6020052921 = 155510^2 + 77589^2 .

It is a cyclic number.

It is not a de Polignac number, because 30203413021 - 2³ = 30203413013 is a prime.

It is a super-2 number, since 2×30203413021² (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 30203413021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30203413081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15101706510 + 15101706511.

It is an arithmetic number, because the mean of its divisors is an integer number (15101706511).

Almost surely, 2^30203413021 is an apocalyptic number.

It is an amenable number.

30203413021 is a deficient number, since it is larger than the sum of its proper divisors (1).

30203413021 is an equidigital number, since it uses as much as digits as its factorization.

30203413021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 30203413021 its reverse (12031430203), we get a palindrome (42234843224).

The spelling of 30203413021 in words is "thirty billion, two hundred three million, four hundred thirteen thousand, twenty-one".