1003303 has 4 divisors (see below), whose sum is σ = 1146640. Its totient is φ = 859968.

The previous prime is 1003291. The next prime is 1003307. The reversal of 1003303 is 3033001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3033001 = 37 ⋅81973.

It is a cyclic number.

It is not a de Polignac number, because 1003303 - 2¹⁷ = 872231 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1003303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003307) 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 in 3 ways as a sum of consecutive naturals, for example, 71658 + ... + 71671.

It is an arithmetic number, because the mean of its divisors is an integer number (286660).

2^1003303 is an apocalyptic number.

1003303 is a deficient number, since it is larger than the sum of its proper divisors (143337).

1003303 is an equidigital number, since it uses as much as digits as its factorization.

1003303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143336.

The product of its (nonzero) digits is 27, while the sum is 10.

The square root of 1003303 is about 1001.6501385214. The cubic root of 1003303 is about 100.1099790019.

Adding to 1003303 its reverse (3033001), we get a palindrome (4036304).

It can be divided in two parts, 100 and 3303, that added together give a triangular number (3403 = T₈₂).

The spelling of 1003303 in words is "one million, three thousand, three hundred three".