20323330013 has 16 divisors (see below), whose sum is σ = 24025372800. Its totient is φ = 17181345888.

The previous prime is 20323329991. The next prime is 20323330033. The reversal of 20323330013 is 31003332302.

It is not a de Polignac number, because 20323330013 - 2⁸ = 20323329757 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 (20323330033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 380795 + ... + 430872.

It is an arithmetic number, because the mean of its divisors is an integer number (1501585800).

Almost surely, 2^20323330013 is an apocalyptic number.

It is an amenable number.

20323330013 is a deficient number, since it is larger than the sum of its proper divisors (3702042787).

20323330013 is an frugal number, since it uses more digits than its factorization.

20323330013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811761 (or 811747 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 20.

Adding to 20323330013 its reverse (31003332302), we get a palindrome (51326662315).

The spelling of 20323330013 in words is "twenty billion, three hundred twenty-three million, three hundred thirty thousand, thirteen".