1323320003 has 2 divisors, whose sum is σ = 1323320004. Its totient is φ = 1323320002.

The previous prime is 1323319993. The next prime is 1323320023. The reversal of 1323320003 is 3000233231.

It is a weak prime.

It is an emirp because it is prime and its reverse (3000233231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1323320003 - 2¹⁶ = 1323254467 is a prime.

It is not a weakly prime, because it can be changed into another prime (1323320023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661660001 + 661660002.

It is an arithmetic number, because the mean of its divisors is an integer number (661660002).

Almost surely, 2^1323320003 is an apocalyptic number.

1323320003 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323320003 is an equidigital number, since it uses as much as digits as its factorization.

1323320003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 17.

The square root of 1323320003 is about 36377.4655934137. The cubic root of 1323320003 is about 1097.8802159854.

Adding to 1323320003 its reverse (3000233231), we get a palindrome (4323553234).

The spelling of 1323320003 in words is "one billion, three hundred twenty-three million, three hundred twenty thousand, three".