13321403 has 2 divisors, whose sum is σ = 13321404. Its totient is φ = 13321402.

The previous prime is 13321397. The next prime is 13321447. The reversal of 13321403 is 30412331.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13321403 - 2⁶ = 13321339 is a prime.

It is not a weakly prime, because it can be changed into another prime (13321463) 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, 6660701 + 6660702.

It is an arithmetic number, because the mean of its divisors is an integer number (6660702).

Almost surely, 2^13321403 is an apocalyptic number.

13321403 is a deficient number, since it is larger than the sum of its proper divisors (1).

13321403 is an equidigital number, since it uses as much as digits as its factorization.

13321403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 13321403 is about 3649.8497229338. The cubic root of 13321403 is about 237.0554743233.

Adding to 13321403 its reverse (30412331), we get a palindrome (43733734).

The spelling of 13321403 in words is "thirteen million, three hundred twenty-one thousand, four hundred three".