213244103 has 4 divisors (see below), whose sum is σ = 213273480. Its totient is φ = 213214728.

The previous prime is 213244099. The next prime is 213244111. The reversal of 213244103 is 301442312.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 213244103 - 2² = 213244099 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 (213247103) 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, 4976 + ... + 21242.

It is an arithmetic number, because the mean of its divisors is an integer number (53318370).

Almost surely, 2^213244103 is an apocalyptic number.

213244103 is a deficient number, since it is larger than the sum of its proper divisors (29377).

213244103 is a wasteful number, since it uses less digits than its factorization.

213244103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29376.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 213244103 is about 14602.8799556800. The cubic root of 213244103 is about 597.4373134984.

Adding to 213244103 its reverse (301442312), we get a palindrome (514686415).

The spelling of 213244103 in words is "two hundred thirteen million, two hundred forty-four thousand, one hundred three".