20321333313 has 16 divisors (see below), whose sum is σ = 28277182080. Its totient is φ = 12956687744.

The previous prime is 20321333297. The next prime is 20321333323. The reversal of 20321333313 is 31333312302.

It is a cyclic number.

It is not a de Polignac number, because 20321333313 - 2⁴ = 20321333297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20321333323) 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, 599893 + ... + 632861.

It is an arithmetic number, because the mean of its divisors is an integer number (1767323880).

Almost surely, 2^20321333313 is an apocalyptic number.

20321333313 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20321333313 is a deficient number, since it is larger than the sum of its proper divisors (7955848767).

20321333313 is a wasteful number, since it uses less digits than its factorization.

20321333313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41928.

The product of its (nonzero) digits is 2916, while the sum is 24.

Adding to 20321333313 its reverse (31333312302), we get a palindrome (51654645615).

The spelling of 20321333313 in words is "twenty billion, three hundred twenty-one million, three hundred thirty-three thousand, three hundred thirteen".