100003002003 has 20 divisors (see below), whose sum is σ = 149441524320. Its totient is φ = 66644424432.

The previous prime is 100003001977. The next prime is 100003002023. The reversal of 100003002003 is 300200300001.

It is a happy number.

It is not a de Polignac number, because 100003002003 - 2⁹ = 100003001491 is a prime.

It is a super-2 number, since 2×100003002003² (a number of 23 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (100003002023) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1033 + ... + 447221.

It is an arithmetic number, because the mean of its divisors is an integer number (7472076216).

Almost surely, 2^100003002003 is an apocalyptic number.

100003002003 is a deficient number, since it is larger than the sum of its proper divisors (49438522317).

100003002003 is an equidigital number, since it uses as much as digits as its factorization.

100003002003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448968 (or 448959 counting only the distinct ones).

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

Adding to 100003002003 its reverse (300200300001), we get a palindrome (400203302004).

The spelling of 100003002003 in words is "one hundred billion, three million, two thousand, three".