243133243091 has 2 divisors, whose sum is σ = 243133243092. Its totient is φ = 243133243090.

The previous prime is 243133243051. The next prime is 243133243159. The reversal of 243133243091 is 190342331342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243133243091 - 2¹⁰ = 243133242067 is a prime.

It is a super-3 number, since 3×243133243091³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (243133243051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121566621545 + 121566621546.

It is an arithmetic number, because the mean of its divisors is an integer number (121566621546).

Almost surely, 2^243133243091 is an apocalyptic number.

243133243091 is a deficient number, since it is larger than the sum of its proper divisors (1).

243133243091 is an equidigital number, since it uses as much as digits as its factorization.

243133243091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 35.

The spelling of 243133243091 in words is "two hundred forty-three billion, one hundred thirty-three million, two hundred forty-three thousand, ninety-one".