1323321003003 has 4 divisors (see below), whose sum is σ = 1764428004008. Its totient is φ = 882214002000.

The previous prime is 1323321002891. The next prime is 1323321003023. The reversal of 1323321003003 is 3003001233231.

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

It is not a de Polignac number, because 1323321003003 - 2¹⁰ = 1323321001979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1323321003023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220553500498 + ... + 220553500503.

It is an arithmetic number, because the mean of its divisors is an integer number (441107001002).

Almost surely, 2^{1323321003003} is an apocalyptic number.

1323321003003 is a deficient number, since it is larger than the sum of its proper divisors (441107001005).

1323321003003 is an equidigital number, since it uses as much as digits as its factorization.

1323321003003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441107001004.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 1323321003003 its reverse (3003001233231), we get a palindrome (4326322236234).

The spelling of 1323321003003 in words is "one trillion, three hundred twenty-three billion, three hundred twenty-one million, three thousand, three".