213244441 has 2 divisors, whose sum is σ = 213244442. Its totient is φ = 213244440.

The previous prime is 213244417. The next prime is 213244457. The reversal of 213244441 is 144442312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159896025 + 53348416 = 12645^2 + 7304^2 .

It is a cyclic number.

It is not a de Polignac number, because 213244441 - 2⁷ = 213244313 is a prime.

It is not a weakly prime, because it can be changed into another prime (213244411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106622220 + 106622221.

It is an arithmetic number, because the mean of its divisors is an integer number (106622221).

Almost surely, 2^213244441 is an apocalyptic number.

It is an amenable number.

213244441 is a deficient number, since it is larger than the sum of its proper divisors (1).

213244441 is an equidigital number, since it uses as much as digits as its factorization.

213244441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3072, while the sum is 25.

The square root of 213244441 is about 14602.8915287350. The cubic root of 213244441 is about 597.4376291519.

Adding to 213244441 its reverse (144442312), we get a palindrome (357686753).

The spelling of 213244441 in words is "two hundred thirteen million, two hundred forty-four thousand, four hundred forty-one".