23121304 has 16 divisors (see below), whose sum is σ = 43482600. Its totient is φ = 11525952.

The previous prime is 23121283. The next prime is 23121331. The reversal of 23121304 is 40312132.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1389 + ... + 6940.

Almost surely, 2^23121304 is an apocalyptic number.

It is an amenable number.

23121304 is a deficient number, since it is larger than the sum of its proper divisors (20361296).

23121304 is a wasteful number, since it uses less digits than its factorization.

23121304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8682 (or 8678 counting only the distinct ones).

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

The square root of 23121304 is about 4808.4617082805. The cubic root of 23121304 is about 284.8857816654.

Adding to 23121304 its reverse (40312132), we get a palindrome (63433436).

The spelling of 23121304 in words is "twenty-three million, one hundred twenty-one thousand, three hundred four".