20311012200 has 96 divisors (see below), whose sum is σ = 63062660160. Its totient is φ = 5407795200.

The previous prime is 20311012177. The next prime is 20311012207. The reversal of 20311012200 is 221011302.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (20311012207) 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 23 ways as a sum of consecutive naturals, for example, 362040 + ... + 414360.

It is an arithmetic number, because the mean of its divisors is an integer number (656902710).

Almost surely, 2^20311012200 is an apocalyptic number.

20311012200 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 20311012200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31531330080).

20311012200 is an abundant number, since it is smaller than the sum of its proper divisors (42751647960).

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

20311012200 is a wasteful number, since it uses less digits than its factorization.

20311012200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52987 (or 52978 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20311012200 its reverse (221011302), we get a palindrome (20532023502).

The spelling of 20311012200 in words is "twenty billion, three hundred eleven million, twelve thousand, two hundred".