1013503 has 2 divisors, whose sum is σ = 1013504. Its totient is φ = 1013502.

The previous prime is 1013501. The next prime is 1013527. The reversal of 1013503 is 3053101.

It is a weak prime.

It is an emirp because it is prime and its reverse (3053101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1013503 - 2¹ = 1013501 is a prime.

Together with 1013501, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1013501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506751 + 506752.

It is an arithmetic number, because the mean of its divisors is an integer number (506752).

2^1013503 is an apocalyptic number.

1013503 is a deficient number, since it is larger than the sum of its proper divisors (1).

1013503 is an equidigital number, since it uses as much as digits as its factorization.

1013503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45, while the sum is 13.

The square root of 1013503 is about 1006.7288612134. The cubic root of 1013503 is about 100.4480891621.

Adding to 1013503 its reverse (3053101), we get a palindrome (4066604).

The spelling of 1013503 in words is "one million, thirteen thousand, five hundred three".