100003000203 has 12 divisors (see below), whose sum is σ = 144962834328. Its totient is φ = 66431410080.

The previous prime is 100003000199. The next prime is 100003000291. The reversal of 100003000203 is 302000300001.

It is a happy number.

It is not a de Polignac number, because 100003000203 - 2² = 100003000199 is a prime.

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 (100003000303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19768725 + ... + 19773782.

It is an arithmetic number, because the mean of its divisors is an integer number (12080236194).

Almost surely, 2^100003000203 is an apocalyptic number.

100003000203 is a deficient number, since it is larger than the sum of its proper divisors (44959834125).

100003000203 is a wasteful number, since it uses less digits than its factorization.

100003000203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39542794 (or 39542791 counting only the distinct ones).

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

Adding to 100003000203 its reverse (302000300001), we get a palindrome (402003300204).

The spelling of 100003000203 in words is "one hundred billion, three million, two hundred three", and thus it is an aban number.