213103 has 4 divisors (see below), whose sum is σ = 232488. Its totient is φ = 193720.

The previous prime is 213097. The next prime is 213119. The reversal of 213103 is 301312.

213103 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 213103 - 2¹⁷ = 82031 is a prime.

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 213103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213133) 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, 9676 + ... + 9697.

It is an arithmetic number, because the mean of its divisors is an integer number (58122).

2²¹³¹⁰³ is an apocalyptic number.

213103 is a deficient number, since it is larger than the sum of its proper divisors (19385).

213103 is a wasteful number, since it uses less digits than its factorization.

213103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19384.

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

The square root of 213103 is about 461.6308048647. The cubic root of 213103 is about 59.7305510248.

Adding to 213103 its reverse (301312), we get a palindrome (514415).

Subtracting 213103 from its reverse (301312), we obtain a square (88209 = 297²).

The spelling of 213103 in words is "two hundred thirteen thousand, one hundred three".