243113441 has 2 divisors, whose sum is σ = 243113442. Its totient is φ = 243113440.

The previous prime is 243113419. The next prime is 243113461. The reversal of 243113441 is 144311342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128709025 + 114404416 = 11345^2 + 10696^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243113441 is a prime.

It is not a weakly prime, because it can be changed into another prime (243113411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121556720 + 121556721.

It is an arithmetic number, because the mean of its divisors is an integer number (121556721).

Almost surely, 2^243113441 is an apocalyptic number.

It is an amenable number.

243113441 is a deficient number, since it is larger than the sum of its proper divisors (1).

243113441 is an equidigital number, since it uses as much as digits as its factorization.

243113441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 23.

The square root of 243113441 is about 15592.0954653311. The cubic root of 243113441 is about 624.1222374832.

Adding to 243113441 its reverse (144311342), we get a palindrome (387424783).

The spelling of 243113441 in words is "two hundred forty-three million, one hundred thirteen thousand, four hundred forty-one".