1321342003 has 2 divisors, whose sum is σ = 1321342004. Its totient is φ = 1321342002.

The previous prime is 1321341997. The next prime is 1321342007. The reversal of 1321342003 is 3002431231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1321342003 - 2²⁹ = 784471091 is a prime.

It is not a weakly prime, because it can be changed into another prime (1321342007) 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, 660671001 + 660671002.

It is an arithmetic number, because the mean of its divisors is an integer number (660671002).

Almost surely, 2^1321342003 is an apocalyptic number.

1321342003 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321342003 is an equidigital number, since it uses as much as digits as its factorization.

1321342003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1321342003 is about 36350.2682658602. The cubic root of 1321342003 is about 1097.3329334065.

Adding to 1321342003 its reverse (3002431231), we get a palindrome (4323773234).

The spelling of 1321342003 in words is "one billion, three hundred twenty-one million, three hundred forty-two thousand, three".