20303055321 has 16 divisors (see below), whose sum is σ = 28630583040. Its totient is φ = 12762202320.

The previous prime is 20303055319. The next prime is 20303055343. The reversal of 20303055321 is 12355030302.

It is a happy number.

It is not a de Polignac number, because 20303055321 - 2¹ = 20303055319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20303055291 and 20303055300.

It is not an unprimeable number, because it can be changed into a prime (20303055301) 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, 832035 + ... + 856088.

It is an arithmetic number, because the mean of its divisors is an integer number (1789411440).

Almost surely, 2^20303055321 is an apocalyptic number.

It is an amenable number.

20303055321 is a deficient number, since it is larger than the sum of its proper divisors (8327527719).

20303055321 is a wasteful number, since it uses less digits than its factorization.

20303055321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1688356.

The product of its (nonzero) digits is 2700, while the sum is 24.

Adding to 20303055321 its reverse (12355030302), we get a palindrome (32658085623).

The spelling of 20303055321 in words is "twenty billion, three hundred three million, fifty-five thousand, three hundred twenty-one".