20243031100 has 72 divisors (see below), whose sum is σ = 44657141760. Its totient is φ = 7963500480.

The previous prime is 20243031097. The next prime is 20243031199. The reversal of 20243031100 is 113034202.

It is a happy number.

It is a congruent number.

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, 2072829 + ... + 2082571.

It is an arithmetic number, because the mean of its divisors is an integer number (620238080).

Almost surely, 2^20243031100 is an apocalyptic number.

20243031100 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 20243031100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22328570880).

20243031100 is an abundant number, since it is smaller than the sum of its proper divisors (24414110660).

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

20243031100 is a wasteful number, since it uses less digits than its factorization.

20243031100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10099 (or 10092 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20243031100 its reverse (113034202), we get a palindrome (20356065302).

The spelling of 20243031100 in words is "twenty billion, two hundred forty-three million, thirty-one thousand, one hundred".