243126313211 has 2 divisors, whose sum is σ = 243126313212. Its totient is φ = 243126313210.

The previous prime is 243126313121. The next prime is 243126313247. The reversal of 243126313211 is 112313621342.

Together with previous prime (243126313121) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243126313211 - 2³⁴ = 225946444027 is a prime.

It is a super-2 number, since 2×243126313211² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (243126313271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121563156605 + 121563156606.

It is an arithmetic number, because the mean of its divisors is an integer number (121563156606).

Almost surely, 2^243126313211 is an apocalyptic number.

243126313211 is a deficient number, since it is larger than the sum of its proper divisors (1).

243126313211 is an equidigital number, since it uses as much as digits as its factorization.

243126313211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 29.

Adding to 243126313211 its reverse (112313621342), we get a palindrome (355439934553).

The spelling of 243126313211 in words is "two hundred forty-three billion, one hundred twenty-six million, three hundred thirteen thousand, two hundred eleven".