1328003 has 2 divisors, whose sum is σ = 1328004. Its totient is φ = 1328002.

The previous prime is 1327999. The next prime is 1328017. The reversal of 1328003 is 3008231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1328003 - 2² = 1327999 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1328203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664001 + 664002.

It is an arithmetic number, because the mean of its divisors is an integer number (664002).

2^1328003 is an apocalyptic number.

1328003 is a deficient number, since it is larger than the sum of its proper divisors (1).

1328003 is an equidigital number, since it uses as much as digits as its factorization.

1328003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1328003 is about 1152.3901249143. The cubic root of 1328003 is about 109.9173759709.

The spelling of 1328003 in words is "one million, three hundred twenty-eight thousand, three".