20003303309 has 16 divisors (see below), whose sum is σ = 22109310720. Its totient is φ = 17945453760.

The previous prime is 20003303267. The next prime is 20003303311. The reversal of 20003303309 is 90330330002.

It is a cyclic number.

It is not a de Polignac number, because 20003303309 - 2²⁴ = 19986526093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20003303339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2147867 + ... + 2157159.

It is an arithmetic number, because the mean of its divisors is an integer number (1381831920).

Almost surely, 2^20003303309 is an apocalyptic number.

It is an amenable number.

20003303309 is a deficient number, since it is larger than the sum of its proper divisors (2106007411).

20003303309 is a wasteful number, since it uses less digits than its factorization.

20003303309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11860.

The product of its (nonzero) digits is 1458, while the sum is 23.

The spelling of 20003303309 in words is "twenty billion, three million, three hundred three thousand, three hundred nine".