20321110311 has 8 divisors (see below), whose sum is σ = 27235202160. Its totient is φ = 13477212672.

The previous prime is 20321110279. The next prime is 20321110319. The reversal of 20321110311 is 11301112302.

It is a happy number.

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

It is not a de Polignac number, because 20321110311 - 2⁵ = 20321110279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20321110319) 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 7 ways as a sum of consecutive naturals, for example, 17547876 + ... + 17549033.

It is an arithmetic number, because the mean of its divisors is an integer number (3404400270).

Almost surely, 2^20321110311 is an apocalyptic number.

20321110311 is a deficient number, since it is larger than the sum of its proper divisors (6914091849).

20321110311 is a wasteful number, since it uses less digits than its factorization.

20321110311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35097105.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 20321110311 its reverse (11301112302), we get a palindrome (31622222613).

The spelling of 20321110311 in words is "twenty billion, three hundred twenty-one million, one hundred ten thousand, three hundred eleven".