1328303 has 4 divisors (see below), whose sum is σ = 1332648. Its totient is φ = 1323960.

The previous prime is 1328297. The next prime is 1328311. The reversal of 1328303 is 3038231.

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 1328303 - 2¹⁸ = 1066159 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328323) 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, 1676 + ... + 2337.

It is an arithmetic number, because the mean of its divisors is an integer number (333162).

2^1328303 is an apocalyptic number.

1328303 is a deficient number, since it is larger than the sum of its proper divisors (4345).

1328303 is an equidigital number, since it uses as much as digits as its factorization.

1328303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4344.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1328303 is about 1152.5202818172. The cubic root of 1328303 is about 109.9256522398.

The spelling of 1328303 in words is "one million, three hundred twenty-eight thousand, three hundred three".