243201340001 has 2 divisors, whose sum is σ = 243201340002. Its totient is φ = 243201340000.

The previous prime is 243201339991. The next prime is 243201340073. The reversal of 243201340001 is 100043102342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 238460328976 + 4741011025 = 488324^2 + 68855^2 .

It is a cyclic number.

It is not a de Polignac number, because 243201340001 - 2¹⁸ = 243201077857 is a prime.

It is not a weakly prime, because it can be changed into another prime (243201340201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121600670000 + 121600670001.

It is an arithmetic number, because the mean of its divisors is an integer number (121600670001).

Almost surely, 2^243201340001 is an apocalyptic number.

It is an amenable number.

243201340001 is a deficient number, since it is larger than the sum of its proper divisors (1).

243201340001 is an equidigital number, since it uses as much as digits as its factorization.

243201340001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 243201340001 its reverse (100043102342), we get a palindrome (343244442343).

The spelling of 243201340001 in words is "two hundred forty-three billion, two hundred one million, three hundred forty thousand, one".