1317330503 has 2 divisors, whose sum is σ = 1317330504. Its totient is φ = 1317330502.

The previous prime is 1317330491. The next prime is 1317330517. The reversal of 1317330503 is 3050337131.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1317330503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1317330403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658665251 + 658665252.

It is an arithmetic number, because the mean of its divisors is an integer number (658665252).

Almost surely, 2^1317330503 is an apocalyptic number.

1317330503 is a deficient number, since it is larger than the sum of its proper divisors (1).

1317330503 is an equidigital number, since it uses as much as digits as its factorization.

1317330503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2835, while the sum is 26.

The square root of 1317330503 is about 36295.0479129040. The cubic root of 1317330503 is about 1096.2213329148.

Adding to 1317330503 its reverse (3050337131), we get a palindrome (4367667634).

The spelling of 1317330503 in words is "one billion, three hundred seventeen million, three hundred thirty thousand, five hundred three".