20321201313 has 96 divisors (see below), whose sum is σ = 35488088064. Its totient is φ = 10962000000.

The previous prime is 20321201297. The next prime is 20321201323. The reversal of 20321201313 is 31310212302.

It is not a de Polignac number, because 20321201313 - 2⁴ = 20321201297 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20321201323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 14004238 + ... + 14005688.

It is an arithmetic number, because the mean of its divisors is an integer number (369667584).

Almost surely, 2^20321201313 is an apocalyptic number.

It is an amenable number.

20321201313 is a deficient number, since it is larger than the sum of its proper divisors (15166886751).

20321201313 is a wasteful number, since it uses less digits than its factorization.

20321201313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1667 (or 1664 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20321201313 its reverse (31310212302), we get a palindrome (51631413615).

The spelling of 20321201313 in words is "twenty billion, three hundred twenty-one million, two hundred one thousand, three hundred thirteen".