213202243 has 4 divisors (see below), whose sum is σ = 213231528. Its totient is φ = 213172960.

The previous prime is 213202181. The next prime is 213202247. The reversal of 213202243 is 342202312.

213202243 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, 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 213202243 - 2¹⁷ = 213071171 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 213202243.

It is not an unprimeable number, because it can be changed into a prime (213202247) 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, 5688 + ... + 21418.

It is an arithmetic number, because the mean of its divisors is an integer number (53307882).

Almost surely, 2^213202243 is an apocalyptic number.

213202243 is a deficient number, since it is larger than the sum of its proper divisors (29285).

213202243 is a wasteful number, since it uses less digits than its factorization.

213202243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29284.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 213202243 is about 14601.4466064154. The cubic root of 213202243 is about 597.3982184548.

Adding to 213202243 its reverse (342202312), we get a palindrome (555404555).

The spelling of 213202243 in words is "two hundred thirteen million, two hundred two thousand, two hundred forty-three".