13321003 has 2 divisors, whose sum is σ = 13321004. Its totient is φ = 13321002.

The previous prime is 13320977. The next prime is 13321027. The reversal of 13321003 is 30012331.

13321003 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13321003 - 2⁵ = 13320971 is a prime.

It is not a weakly prime, because it can be changed into another prime (13321303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6660501 + 6660502.

It is an arithmetic number, because the mean of its divisors is an integer number (6660502).

Almost surely, 2^13321003 is an apocalyptic number.

13321003 is a deficient number, since it is larger than the sum of its proper divisors (1).

13321003 is an equidigital number, since it uses as much as digits as its factorization.

13321003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 13321003 is about 3649.7949257458. The cubic root of 13321003 is about 237.0531016218.

Adding to 13321003 its reverse (30012331), we get a palindrome (43333334).

The spelling of 13321003 in words is "thirteen million, three hundred twenty-one thousand, three".