23100000 has 288 divisors, whose sum is σ = 94493952. Its totient is φ = 4800000.

The previous prime is 23099969. The next prime is 23100001. The reversal of 23100000 is 132.

It is a super-2 number, since 2×23100000² = 1067220000000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23100001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2099995 + ... + 2100005.

It is an arithmetic number, because the mean of its divisors is an integer number (328104).

Almost surely, 2^23100000 is an apocalyptic number.

23100000 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 23100000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47246976).

23100000 is an abundant number, since it is smaller than the sum of its proper divisors (71393952).

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

23100000 is an equidigital number, since it uses as much as digits as its factorization.

23100000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56 (or 28 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 6.

The square root of 23100000 is about 4806.2459362792. The cubic root of 23100000 is about 284.7982567330.

Adding to 23100000 its reverse (132), we get a palindrome (23100132).

The spelling of 23100000 in words is "twenty-three million, one hundred thousand".