1317503 has 4 divisors (see below), whose sum is σ = 1437288. Its totient is φ = 1197720.

The previous prime is 1317493. The next prime is 1317521. The reversal of 1317503 is 3057131.

It is a happy number.

1317503 is nontrivially palindromic in base 9.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1317503 - 2⁴ = 1317487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59876 + ... + 59897.

It is an arithmetic number, because the mean of its divisors is an integer number (359322).

2^1317503 is an apocalyptic number.

1317503 is a deficient number, since it is larger than the sum of its proper divisors (119785).

1317503 is a wasteful number, since it uses less digits than its factorization.

1317503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119784.

The product of its (nonzero) digits is 315, while the sum is 20.

The square root of 1317503 is about 1147.8253351447. The cubic root of 1317503 is about 109.6269178827.

The spelling of 1317503 in words is "one million, three hundred seventeen thousand, five hundred three".