23003100 has 108 divisors (see below), whose sum is σ = 73458840. Its totient is φ = 6019200.

The previous prime is 23003087. The next prime is 23003107. The reversal of 23003100 is 130032.

It is a happy number.

It is a super-2 number, since 2×23003100² = 1058285219220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23003107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 54691 + ... + 55109.

Almost surely, 2^23003100 is an apocalyptic number.

23003100 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 23003100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36729420).

23003100 is an abundant number, since it is smaller than the sum of its proper divisors (50455740).

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

23003100 is a wasteful number, since it uses less digits than its factorization.

23003100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 9.

The square root of 23003100 is about 4796.1547097649. The cubic root of 23003100 is about 284.3994742048.

Adding to 23003100 its reverse (130032), we get a palindrome (23133132).

The spelling of 23003100 in words is "twenty-three million, three thousand, one hundred".