23121843800 has 96 divisors (see below), whose sum is σ = 59068094400. Its totient is φ = 8347344000.

The previous prime is 23121843791. The next prime is 23121843809. The reversal of 23121843800 is 834812132.

It is an interprime number because it is at equal distance from previous prime (23121843791) and next prime (23121843809).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23121843809) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 267995 + ... + 343605.

It is an arithmetic number, because the mean of its divisors is an integer number (615292650).

Almost surely, 2^23121843800 is an apocalyptic number.

23121843800 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 23121843800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29534047200).

23121843800 is an abundant number, since it is smaller than the sum of its proper divisors (35946250600).

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

23121843800 is a wasteful number, since it uses less digits than its factorization.

23121843800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75777 (or 75768 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The spelling of 23121843800 in words is "twenty-three billion, one hundred twenty-one million, eight hundred forty-three thousand, eight hundred".