243212441 has 2 divisors, whose sum is σ = 243212442. Its totient is φ = 243212440.

The previous prime is 243212413. The next prime is 243212447. The reversal of 243212441 is 144212342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 237283216 + 5929225 = 15404^2 + 2435^2 .

It is a cyclic number.

It is not a de Polignac number, because 243212441 - 2⁶ = 243212377 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (243212447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121606220 + 121606221.

It is an arithmetic number, because the mean of its divisors is an integer number (121606221).

Almost surely, 2^243212441 is an apocalyptic number.

It is an amenable number.

243212441 is a deficient number, since it is larger than the sum of its proper divisors (1).

243212441 is an equidigital number, since it uses as much as digits as its factorization.

243212441 is an odious number, because the sum of its binary digits is odd.

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

The square root of 243212441 is about 15595.2698277394. The cubic root of 243212441 is about 624.2069437779.

Adding to 243212441 its reverse (144212342), we get a palindrome (387424783).

Subtracting from 243212441 its reverse (144212342), we obtain a palindrome (99000099).

It can be divided in two parts, 24321 and 2441, that added together give a palindrome (26762).

The spelling of 243212441 in words is "two hundred forty-three million, two hundred twelve thousand, four hundred forty-one".