100203202003 has 4 divisors (see below), whose sum is σ = 105477054760. Its totient is φ = 94929349248.

The previous prime is 100203201991. The next prime is 100203202037. The reversal of 100203202003 is 300202302001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100203202003 - 2¹⁷ = 100203070931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100203202093) 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 3 ways as a sum of consecutive naturals, for example, 2636926350 + ... + 2636926387.

It is an arithmetic number, because the mean of its divisors is an integer number (26369263690).

Almost surely, 2^100203202003 is an apocalyptic number.

100203202003 is a deficient number, since it is larger than the sum of its proper divisors (5273852757).

100203202003 is an equidigital number, since it uses as much as digits as its factorization.

100203202003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5273852756.

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 100203202003 its reverse (300202302001), we get a palindrome (400405504004).

The spelling of 100203202003 in words is "one hundred billion, two hundred three million, two hundred two thousand, three".