23312304 has 120 divisors (see below), whose sum is σ = 70508880. Its totient is φ = 7163904.

The previous prime is 23312291. The next prime is 23312323. The reversal of 23312304 is 40321332.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 217819 + ... + 217925.

It is an arithmetic number, because the mean of its divisors is an integer number (587574).

Almost surely, 2^23312304 is an apocalyptic number.

23312304 is a gapful number since it is divisible by the number (24) 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 23312304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35254440).

23312304 is an abundant number, since it is smaller than the sum of its proper divisors (47196576).

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

23312304 is a wasteful number, since it uses less digits than its factorization.

23312304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227 (or 218 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 23312304 is about 4828.2816819237. The cubic root of 23312304 is about 285.6680910078.

Adding to 23312304 its reverse (40321332), we get a palindrome (63633636).

Subtracting 23312304 from its reverse (40321332), we obtain a triangular number (17009028 = T₅₈₃₂).

The spelling of 23312304 in words is "twenty-three million, three hundred twelve thousand, three hundred four".