23418321 has 8 divisors (see below), whose sum is σ = 31259904. Its totient is φ = 15594480.

The previous prime is 23418293. The next prime is 23418331. The reversal of 23418321 is 12381432.

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

It is not a de Polignac number, because 23418321 - 2⁵ = 23418289 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 23418291 and 23418300.

It is not an unprimeable number, because it can be changed into a prime (23418331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 966 + ... + 6911.

It is an arithmetic number, because the mean of its divisors is an integer number (3907488).

Almost surely, 2^23418321 is an apocalyptic number.

It is an amenable number.

23418321 is a deficient number, since it is larger than the sum of its proper divisors (7841583).

23418321 is an equidigital number, since it uses as much as digits as its factorization.

23418321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8871.

The product of its digits is 1152, while the sum is 24.

The square root of 23418321 is about 4839.2479787669. The cubic root of 23418321 is about 286.1004789827.

Adding to 23418321 its reverse (12381432), we get a palindrome (35799753).

The spelling of 23418321 in words is "twenty-three million, four hundred eighteen thousand, three hundred twenty-one".