1000003000003 has 8 divisors (see below), whose sum is σ = 1169438724608. Its totient is φ = 837211813704.

The previous prime is 1000002999973. The next prime is 1000003000013. The reversal of 1000003000003 is 3000003000001.

It is a happy number.

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

It is not a de Polignac number, because 1000003000003 - 2⁹ = 1000002999491 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is the 1000002-nd Hogben number.

1000003000003 is a modest number, since divided by 3000003 gives 1 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 1000003000003.

It is not an unprimeable number, because it can be changed into a prime (1000003000013) by changing a digit.

It is a nontrivial repunit in base 1000001.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1661134251 + ... + 1661134852.

It is an arithmetic number, because the mean of its divisors is an integer number (146179840576).

Almost surely, 2^{1000003000003} is an apocalyptic number.

1000003000003 is a deficient number, since it is larger than the sum of its proper divisors (169435724605).

1000003000003 is an equidigital number, since it uses as much as digits as its factorization.

1000003000003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3322269153.

The product of its (nonzero) digits is 9, while the sum is 7.

Adding to 1000003000003 its reverse (3000003000001), we get a palindrome (4000006000004).

The spelling of 1000003000003 in words is "one trillion, three million, three", and thus it is an aban number and an uban number.