1323 has 12 divisors (see below), whose sum is σ = 2280. Its totient is φ = 756.

The previous prime is 1321. The next prime is 1327. The reversal of 1323 is 3231.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not a de Polignac number, because 1323 - 2¹ = 1321 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a d-powerful number, because it can be written as 1 + 2⁹ + 3⁴ + 3⁶ .

1323 is a lucky number.

It is a plaindrome in base 13.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (1321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 186 + ... + 192.

It is an arithmetic number, because the mean of its divisors is an integer number (190).

1323 is a deficient number, since it is larger than the sum of its proper divisors (957).

1323 is an equidigital number, since it uses as much as digits as its factorization.

1323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23 (or 10 counting only the distinct ones).

The product of its digits is 18, while the sum is 9.

The square root of 1323 is about 36.3730669589. The cubic root of 1323 is about 10.9779171301.

Adding to 1323 its reverse (3231), we get a palindrome (4554).

It can be divided in two parts, 13 and 23, that added together give a triangular number (36 = T₈).

The spelling of 1323 in words is "one thousand, three hundred twenty-three", and thus it is an iban number.