1323003 has 16 divisors (see below), whose sum is σ = 1967616. Its totient is φ = 783840.

The previous prime is 1323001. The next prime is 1323017. The reversal of 1323003 is 3003231.

It is a happy number.

It is not a de Polignac number, because 1323003 - 2¹ = 1323001 is a prime.

1323003 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1323003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1125 + ... + 1977.

It is an arithmetic number, because the mean of its divisors is an integer number (122976).

2^1323003 is an apocalyptic number.

1323003 is a deficient number, since it is larger than the sum of its proper divisors (644613).

1323003 is a wasteful number, since it uses less digits than its factorization.

1323003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914.

The product of its (nonzero) digits is 54, while the sum is 12.

The square root of 1323003 is about 1150.2186748614. The cubic root of 1323003 is about 109.7792542781.

Adding to 1323003 its reverse (3003231), we get a palindrome (4326234).

It can be divided in two parts, 132300 and 3, that multiplied together give a square (396900 = 630²).

The spelling of 1323003 in words is "one million, three hundred twenty-three thousand, three".