13423

13423 is a natural number that lies between 13422 and 13424. In decimal notation it is written as 13423.

It is an odd composite number. The prime factorization is 31 × 433, making it a semiprime. As a semiprime, its positive divisors are 1, 31, 433, and 13423.

In base-2, 13423 equals 11010001101111, and in hexadecimal it is 0x346F. The sum of its digits is 13, so modulo 9 the number is congruent to 4. It is not divisible by 3 or 9, nor by 5, and it is not a Harshad number because 13 does not divide 13423.

Because it factors into two primes, 13423 serves as an example of a semiprime in elementary number theory and is often used in discussions about divisors and factorization. It is not a prime, a perfect square, or a higher-order prime power.