20003321313 has 6 divisors (see below), whose sum is σ = 28893686354. Its totient is φ = 13335547536.

The previous prime is 20003321311. The next prime is 20003321339. The reversal of 20003321313 is 31312330002.

20003321313 is a `hidden beast` number, since 20 + 0 + 0 + 332 + 1 + 313 = 666.

It can be written as a sum of positive squares in only one way, i.e., 18694545984 + 1308775329 = 136728^2 + 36177^2 .

It is not a de Polignac number, because 20003321313 - 2¹ = 20003321311 is a prime.

It is a super-2 number, since 2×20003321313² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20003321311) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1111295620 + ... + 1111295637.

Almost surely, 2^20003321313 is an apocalyptic number.

It is an amenable number.

20003321313 is a deficient number, since it is larger than the sum of its proper divisors (8890365041).

20003321313 is a wasteful number, since it uses less digits than its factorization.

20003321313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222591263 (or 2222591260 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 20003321313 its reverse (31312330002), we get a palindrome (51315651315).

The spelling of 20003321313 in words is "twenty billion, three million, three hundred twenty-one thousand, three hundred thirteen".