1323503 has 2 divisors, whose sum is σ = 1323504. Its totient is φ = 1323502.

The previous prime is 1323499. The next prime is 1323529. The reversal of 1323503 is 3053231.

It is a weak prime.

It is an emirp because it is prime and its reverse (3053231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1323503 - 2² = 1323499 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1323533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661751 + 661752.

It is an arithmetic number, because the mean of its divisors is an integer number (661752).

2^1323503 is an apocalyptic number.

1323503 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323503 is an equidigital number, since it uses as much as digits as its factorization.

1323503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 17.

The square root of 1323503 is about 1150.4360043045. The cubic root of 1323503 is about 109.7930820910.

Adding to 1323503 its reverse (3053231), we get a palindrome (4376734).

The spelling of 1323503 in words is "one million, three hundred twenty-three thousand, five hundred three".