20310020321 has 8 divisors (see below), whose sum is σ = 20429477184. Its totient is φ = 20190895920.

The previous prime is 20310020287. The next prime is 20310020351. The reversal of 20310020321 is 12302001302.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20310020321 - 2³⁴ = 3130151137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20310020296 and 20310020305.

It is not an unprimeable number, because it can be changed into a prime (20310020351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39956 + ... + 205466.

It is an arithmetic number, because the mean of its divisors is an integer number (2553684648).

Almost surely, 2^20310020321 is an apocalyptic number.

It is an amenable number.

20310020321 is a deficient number, since it is larger than the sum of its proper divisors (119456863).

20310020321 is a wasteful number, since it uses less digits than its factorization.

20310020321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166231.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20310020321 its reverse (12302001302), we get a palindrome (32612021623).

The spelling of 20310020321 in words is "twenty billion, three hundred ten million, twenty thousand, three hundred twenty-one".