320010003 has 12 divisors (see below), whose sum is σ = 474730048. Its totient is φ = 207573840.

The previous prime is 320009969. The next prime is 320010007. The reversal of 320010003 is 300010023.

It is a happy number.

It is not a de Polignac number, because 320010003 - 2⁹ = 320009491 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320010007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 480163 + ... + 480828.

Almost surely, 2^320010003 is an apocalyptic number.

320010003 is a deficient number, since it is larger than the sum of its proper divisors (154720045).

320010003 is a wasteful number, since it uses less digits than its factorization.

320010003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961034 (or 961031 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 9.

The square root of 320010003 is about 17888.8234101631. The cubic root of 320010003 is about 683.9975056337.

Adding to 320010003 its reverse (300010023), we get a palindrome (620020026).

It can be divided in two parts, 3200 and 10003, that added together give a triangular number (13203 = T₁₆₂).

The spelling of 320010003 in words is "three hundred twenty million, ten thousand, three".