213444041 has 2 divisors, whose sum is σ = 213444042. Its totient is φ = 213444040.

The previous prime is 213444029. The next prime is 213444067. The reversal of 213444041 is 140444312.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 179560000 + 33884041 = 13400^2 + 5821^2 .

It is a cyclic number.

It is not a de Polignac number, because 213444041 - 2¹⁸ = 213181897 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 213443998 and 213444016.

It is not a weakly prime, because it can be changed into another prime (213444001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106722020 + 106722021.

It is an arithmetic number, because the mean of its divisors is an integer number (106722021).

Almost surely, 2^213444041 is an apocalyptic number.

It is an amenable number.

213444041 is a deficient number, since it is larger than the sum of its proper divisors (1).

213444041 is an equidigital number, since it uses as much as digits as its factorization.

213444041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 213444041 is about 14609.7241931530. The cubic root of 213444041 is about 597.6239745550.

Adding to 213444041 its reverse (140444312), we get a palindrome (353888353).

The spelling of 213444041 in words is "two hundred thirteen million, four hundred forty-four thousand, forty-one".