20303030009 has 2 divisors, whose sum is σ = 20303030010. Its totient is φ = 20303030008.

The previous prime is 20303030003. The next prime is 20303030039. The reversal of 20303030009 is 90003030302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10940532409 + 9362497600 = 104597^2 + 96760^2 .

It is a cyclic number.

It is not a de Polignac number, because 20303030009 - 2⁸ = 20303029753 is a prime.

It is not a weakly prime, because it can be changed into another prime (20303030003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10151515004 + 10151515005.

It is an arithmetic number, because the mean of its divisors is an integer number (10151515005).

Almost surely, 2^20303030009 is an apocalyptic number.

It is an amenable number.

20303030009 is a deficient number, since it is larger than the sum of its proper divisors (1).

20303030009 is an equidigital number, since it uses as much as digits as its factorization.

20303030009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 20.

The spelling of 20303030009 in words is "twenty billion, three hundred three million, thirty thousand, nine".