210030103 has 4 divisors (see below), whose sum is σ = 214914568. Its totient is φ = 205145640.

The previous prime is 210030101. The next prime is 210030109. The reversal of 210030103 is 301030012.

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 210030103 - 2¹ = 210030101 is a prime.

It is a super-2 number, since 2×210030103² = 88225288332381218, 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 210030103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210030101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2442168 + ... + 2442253.

It is an arithmetic number, because the mean of its divisors is an integer number (53728642).

Almost surely, 2^210030103 is an apocalyptic number.

210030103 is a deficient number, since it is larger than the sum of its proper divisors (4884465).

210030103 is an equidigital number, since it uses as much as digits as its factorization.

210030103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4884464.

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

The square root of 210030103 is about 14492.4153611467. The cubic root of 210030103 is about 594.4205954880.

Adding to 210030103 its reverse (301030012), we get a palindrome (511060115).

Subtracting 210030103 from its reverse (301030012), we obtain a palindrome (90999909).

The spelling of 210030103 in words is "two hundred ten million, thirty thousand, one hundred three".