30203321989 has 2 divisors, whose sum is σ = 30203321990. Its totient is φ = 30203321988.

The previous prime is 30203321987. The next prime is 30203322029. The reversal of 30203321989 is 98912330203.

It is a happy number.

It is an a-pointer prime, because the next prime (30203322029) can be obtained adding 30203321989 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15170109889 + 15033212100 = 123167^2 + 122610^2 .

It is a cyclic number.

It is not a de Polignac number, because 30203321989 - 2¹ = 30203321987 is a prime.

It is a super-2 number, since 2×30203321989² (a number of 22 digits) contains 22 as substring.

Together with 30203321987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30203321987) 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, 15101660994 + 15101660995.

It is an arithmetic number, because the mean of its divisors is an integer number (15101660995).

Almost surely, 2^30203321989 is an apocalyptic number.

It is an amenable number.

30203321989 is a deficient number, since it is larger than the sum of its proper divisors (1).

30203321989 is an equidigital number, since it uses as much as digits as its factorization.

30203321989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 40.

The spelling of 30203321989 in words is "thirty billion, two hundred three million, three hundred twenty-one thousand, nine hundred eighty-nine".