1003321 has 8 divisors (see below), whose sum is σ = 1102464. Its totient is φ = 905520.

The previous prime is 1003307. The next prime is 1003337. The reversal of 1003321 is 1233001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1003321 - 2⁷ = 1003193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1003298 and 1003307.

It is not an unprimeable number, because it can be changed into a prime (1003351) 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 7 ways as a sum of consecutive naturals, for example, 1936 + ... + 2398.

It is an arithmetic number, because the mean of its divisors is an integer number (137808).

2^1003321 is an apocalyptic number.

1003321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1003321 is a deficient number, since it is larger than the sum of its proper divisors (99143).

1003321 is a wasteful number, since it uses less digits than its factorization.

1003321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 1003321 is about 1001.6591236543. The cubic root of 1003321 is about 100.1105776807.

Adding to 1003321 its reverse (1233001), we get a palindrome (2236322).

The spelling of 1003321 in words is "one million, three thousand, three hundred twenty-one".