243140302441 has 2 divisors, whose sum is σ = 243140302442. Its totient is φ = 243140302440.

The previous prime is 243140302387. The next prime is 243140302459. The reversal of 243140302441 is 144203041342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198221738841 + 44918563600 = 445221^2 + 211940^2 .

It is a cyclic number.

It is not a de Polignac number, because 243140302441 - 2⁷ = 243140302313 is a prime.

It is a super-2 number, since 2×243140302441² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (243140302841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121570151220 + 121570151221.

It is an arithmetic number, because the mean of its divisors is an integer number (121570151221).

Almost surely, 2^243140302441 is an apocalyptic number.

It is an amenable number.

243140302441 is a deficient number, since it is larger than the sum of its proper divisors (1).

243140302441 is an equidigital number, since it uses as much as digits as its factorization.

243140302441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 243140302441 its reverse (144203041342), we get a palindrome (387343343783).

The spelling of 243140302441 in words is "two hundred forty-three billion, one hundred forty million, three hundred two thousand, four hundred forty-one".