213044 has 24 divisors (see below), whose sum is σ = 426888. Its totient is φ = 92160.

The previous prime is 213043. The next prime is 213067. The reversal of 213044 is 440312.

It can be written as a sum of positive squares in 4 ways, for example, as 44944 + 168100 = 212^2 + 410^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 764 + ... + 1004.

It is an arithmetic number, because the mean of its divisors is an integer number (17787).

2²¹³⁰⁴⁴ is an apocalyptic number.

It is an amenable number.

213044 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213044 is a wasteful number, since it uses less digits than its factorization.

213044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275 (or 273 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 213044 is about 461.5668965600. The cubic root of 213044 is about 59.7250381542.

Adding to 213044 its reverse (440312), we get a palindrome (653356).

The spelling of 213044 in words is "two hundred thirteen thousand, forty-four".