231668565263 has 2 divisors, whose sum is σ = 231668565264. Its totient is φ = 231668565262.

The previous prime is 231668565257. The next prime is 231668565281. The reversal of 231668565263 is 362565866132.

231668565263 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231668565263 - 2²⁴ = 231651788047 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231668565253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115834282631 + 115834282632.

It is an arithmetic number, because the mean of its divisors is an integer number (115834282632).

Almost surely, 2^231668565263 is an apocalyptic number.

231668565263 is a deficient number, since it is larger than the sum of its proper divisors (1).

231668565263 is an equidigital number, since it uses as much as digits as its factorization.

231668565263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9331200, while the sum is 53.

The spelling of 231668565263 in words is "two hundred thirty-one billion, six hundred sixty-eight million, five hundred sixty-five thousand, two hundred sixty-three".