213230441 has 4 divisors (see below), whose sum is σ = 216726084. Its totient is φ = 209734800.

The previous prime is 213230419. The next prime is 213230449. The reversal of 213230441 is 144032312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46717225 + 166513216 = 6835^2 + 12904^2 .

It is a cyclic number.

It is not a de Polignac number, because 213230441 - 2⁶ = 213230377 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (213230449) 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, 1747730 + ... + 1747851.

It is an arithmetic number, because the mean of its divisors is an integer number (54181521).

Almost surely, 2^213230441 is an apocalyptic number.

It is an amenable number.

213230441 is a deficient number, since it is larger than the sum of its proper divisors (3495643).

213230441 is an equidigital number, since it uses as much as digits as its factorization.

213230441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3495642.

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

The square root of 213230441 is about 14602.4121637488. The cubic root of 213230441 is about 597.4245544697.

Adding to 213230441 its reverse (144032312), we get a palindrome (357262753).

The spelling of 213230441 in words is "two hundred thirteen million, two hundred thirty thousand, four hundred forty-one".