20321311300 has 72 divisors (see below), whose sum is σ = 46662013440. Its totient is φ = 7660252800.

The previous prime is 20321311289. The next prime is 20321311337. The reversal of 20321311300 is 311312302.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 334902 + ... + 390898.

It is an arithmetic number, because the mean of its divisors is an integer number (648083520).

Almost surely, 2^20321311300 is an apocalyptic number.

20321311300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20321311300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23331006720).

20321311300 is an abundant number, since it is smaller than the sum of its proper divisors (26340702140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20321311300 is a wasteful number, since it uses less digits than its factorization.

20321311300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56221 (or 56214 counting only the distinct ones).

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

Adding to 20321311300 its reverse (311312302), we get a palindrome (20632623602).

The spelling of 20321311300 in words is "twenty billion, three hundred twenty-one million, three hundred eleven thousand, three hundred".