243112063074281 has 2 divisors, whose sum is σ = 243112063074282. Its totient is φ = 243112063074280.

The previous prime is 243112063074187. The next prime is 243112063074311. The reversal of 243112063074281 is 182470360211342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161066963558656 + 82045099515625 = 12691216^2 + 9057875^2 .

It is a cyclic number.

It is not a de Polignac number, because 243112063074281 - 2²⁶ = 243111995965417 is a prime.

It is a super-2 number, since 2×243112063074281² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (243112063074781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121556031537140 + 121556031537141.

It is an arithmetic number, because the mean of its divisors is an integer number (121556031537141).

Almost surely, 2^{243112063074281} is an apocalyptic number.

It is an amenable number.

243112063074281 is a deficient number, since it is larger than the sum of its proper divisors (1).

243112063074281 is an equidigital number, since it uses as much as digits as its factorization.

243112063074281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 387072, while the sum is 44.

The spelling of 243112063074281 in words is "two hundred forty-three trillion, one hundred twelve billion, sixty-three million, seventy-four thousand, two hundred eighty-one".