1000001001003 has 8 divisors (see below), whose sum is σ = 1333453305408. Its totient is φ = 666608015304.

The previous prime is 1000001000941. The next prime is 1000001001023. The reversal of 1000001001003 is 3001001000001.

1000001001003 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 1000001001003 - 2⁹ = 1000001000491 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1000001000982 and 1000001001000.

It is not an unprimeable number, because it can be changed into a prime (1000001001023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14790325 + ... + 14857782.

It is an arithmetic number, because the mean of its divisors is an integer number (166681663176).

Almost surely, 2^{1000001001003} is an apocalyptic number.

1000001001003 is a deficient number, since it is larger than the sum of its proper divisors (333452304405).

1000001001003 is a wasteful number, since it uses less digits than its factorization.

1000001001003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29659353.

The product of its (nonzero) digits is 3, while the sum is 6.

Adding to 1000001001003 its reverse (3001001000001), we get a palindrome (4001002001004).

The spelling of 1000001001003 in words is "one trillion, one million, one thousand, three".