23712321 has 8 divisors (see below), whose sum is σ = 31639104. Its totient is φ = 15796880.

The previous prime is 23712319. The next prime is 23712383. The reversal of 23712321 is 12321732.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23712321 - 2¹ = 23712319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23712121) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5836 + ... + 9026.

It is an arithmetic number, because the mean of its divisors is an integer number (3954888).

Almost surely, 2^23712321 is an apocalyptic number.

It is an amenable number.

23712321 is a deficient number, since it is larger than the sum of its proper divisors (7926783).

23712321 is a wasteful number, since it uses less digits than its factorization.

23712321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5671.

The product of its digits is 504, while the sum is 21.

The square root of 23712321 is about 4869.5298541030. The cubic root of 23712321 is about 287.2927645823.

The spelling of 23712321 in words is "twenty-three million, seven hundred twelve thousand, three hundred twenty-one".