203100103 has 4 divisors (see below), whose sum is σ = 203157760. Its totient is φ = 203042448.

The previous prime is 203100091. The next prime is 203100151. The reversal of 203100103 is 301001302.

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 203100103 - 2²⁵ = 169545671 is a prime.

It is a super-2 number, since 2×203100103² = 82499303677221218, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 203100103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203100203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23175 + ... + 30712.

It is an arithmetic number, because the mean of its divisors is an integer number (50789440).

Almost surely, 2^203100103 is an apocalyptic number.

203100103 is a deficient number, since it is larger than the sum of its proper divisors (57657).

203100103 is an equidigital number, since it uses as much as digits as its factorization.

203100103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57656.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 203100103 is about 14251.3193424328. The cubic root of 203100103 is about 587.8096540546.

Adding to 203100103 its reverse (301001302), we get a palindrome (504101405).

It can be divided in two parts, 203100 and 103, that added together give a triangular number (203203 = T₆₃₇).

The spelling of 203100103 in words is "two hundred three million, one hundred thousand, one hundred three".