210100103 has 4 divisors (see below), whose sum is σ = 210160920. Its totient is φ = 210039288.

The previous prime is 210100073. The next prime is 210100123. The reversal of 210100103 is 301001012.

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 210100103 - 2⁸ = 210099847 is a prime.

It is a super-3 number, since 3×210100103³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210100123) 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, 24893 + ... + 32246.

It is an arithmetic number, because the mean of its divisors is an integer number (52540230).

Almost surely, 2^210100103 is an apocalyptic number.

210100103 is a deficient number, since it is larger than the sum of its proper divisors (60817).

210100103 is an equidigital number, since it uses as much as digits as its factorization.

210100103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60816.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 210100103 is about 14494.8302163220. The cubic root of 210100103 is about 594.4866254195.

Adding to 210100103 its reverse (301001012), we get a palindrome (511101115).

Subtracting 210100103 from its reverse (301001012), we obtain a palindrome (90900909).

The spelling of 210100103 in words is "two hundred ten million, one hundred thousand, one hundred three".