213244 has 12 divisors (see below), whose sum is σ = 378000. Its totient is φ = 105248.

The previous prime is 213229. The next prime is 213247. The reversal of 213244 is 442312.

213244 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a d-powerful number, because it can be written as 2¹¹ + 1 + 2¹⁵ + 3¹¹ + 4⁴ + 4⁵ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213247) 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, 57 + ... + 655.

It is an arithmetic number, because the mean of its divisors is an integer number (31500).

2²¹³²⁴⁴ is an apocalyptic number.

It is an amenable number.

213244 is a deficient number, since it is larger than the sum of its proper divisors (164756).

213244 is a wasteful number, since it uses less digits than its factorization.

213244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692 (or 690 counting only the distinct ones).

The product of its digits is 192, while the sum is 16.

The square root of 213244 is about 461.7834990556. The cubic root of 213244 is about 59.7437217308.

Adding to 213244 its reverse (442312), we get a palindrome (655556).

The spelling of 213244 in words is "two hundred thirteen thousand, two hundred forty-four".