243121244071 has 2 divisors, whose sum is σ = 243121244072. Its totient is φ = 243121244070.

The previous prime is 243121243997. The next prime is 243121244083. The reversal of 243121244071 is 170442121342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243121244071 - 2¹⁵ = 243121211303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243121244671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121560622035 + 121560622036.

It is an arithmetic number, because the mean of its divisors is an integer number (121560622036).

Almost surely, 2^243121244071 is an apocalyptic number.

243121244071 is a deficient number, since it is larger than the sum of its proper divisors (1).

243121244071 is an equidigital number, since it uses as much as digits as its factorization.

243121244071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 31.

The spelling of 243121244071 in words is "two hundred forty-three billion, one hundred twenty-one million, two hundred forty-four thousand, seventy-one".