20311030321 has 8 divisors (see below), whose sum is σ = 20429312000. Its totient is φ = 20192911200.

The previous prime is 20311030319. The next prime is 20311030331. The reversal of 20311030321 is 12303011302.

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 20311030321 - 2¹ = 20311030319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20311030295 and 20311030304.

It is not an unprimeable number, because it can be changed into a prime (20311030331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214621 + ... + 294421.

It is an arithmetic number, because the mean of its divisors is an integer number (2553664000).

Almost surely, 2^20311030321 is an apocalyptic number.

It is an amenable number.

20311030321 is a deficient number, since it is larger than the sum of its proper divisors (118281679).

20311030321 is a wasteful number, since it uses less digits than its factorization.

20311030321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81279.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20311030321 its reverse (12303011302), we get a palindrome (32614041623).

The spelling of 20311030321 in words is "twenty billion, three hundred eleven million, thirty thousand, three hundred twenty-one".