210103103 has 4 divisors (see below), whose sum is σ = 240117840. Its totient is φ = 180088368.

The previous prime is 210103099. The next prime is 210103109. The reversal of 210103103 is 301301012.

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 210103103 - 2² = 210103099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210103109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15007358 + ... + 15007371.

It is an arithmetic number, because the mean of its divisors is an integer number (60029460).

Almost surely, 2^210103103 is an apocalyptic number.

210103103 is a deficient number, since it is larger than the sum of its proper divisors (30014737).

210103103 is an equidigital number, since it uses as much as digits as its factorization.

210103103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30014736.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 210103103 is about 14494.9337011247. The cubic root of 210103103 is about 594.4894549459.

Adding to 210103103 its reverse (301301012), we get a palindrome (511404115).

The spelling of 210103103 in words is "two hundred ten million, one hundred three thousand, one hundred three".