23426321 has 4 divisors (see below), whose sum is σ = 23517732. Its totient is φ = 23334912.

The previous prime is 23426251. The next prime is 23426327. The reversal of 23426321 is 12362432.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12503296 + 10923025 = 3536^2 + 3305^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23426321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23426327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45320 + ... + 45833.

It is an arithmetic number, because the mean of its divisors is an integer number (5879433).

Almost surely, 2^23426321 is an apocalyptic number.

It is an amenable number.

23426321 is a deficient number, since it is larger than the sum of its proper divisors (91411).

23426321 is an equidigital number, since it uses as much as digits as its factorization.

23426321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91410.

The product of its digits is 1728, while the sum is 23.

The square root of 23426321 is about 4840.0744828980. The cubic root of 23426321 is about 286.1330538095.

Adding to 23426321 its reverse (12362432), we get a palindrome (35788753).

The spelling of 23426321 in words is "twenty-three million, four hundred twenty-six thousand, three hundred twenty-one".