243660064231 has 2 divisors, whose sum is σ = 243660064232. Its totient is φ = 243660064230.

The previous prime is 243660064169. The next prime is 243660064253. The reversal of 243660064231 is 132460066342.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243660064231 - 2⁷ = 243660064103 is a prime.

It is a super-2 number, since 2×243660064231² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243660064331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121830032115 + 121830032116.

It is an arithmetic number, because the mean of its divisors is an integer number (121830032116).

Almost surely, 2^243660064231 is an apocalyptic number.

243660064231 is a deficient number, since it is larger than the sum of its proper divisors (1).

243660064231 is an equidigital number, since it uses as much as digits as its factorization.

243660064231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 37.

The spelling of 243660064231 in words is "two hundred forty-three billion, six hundred sixty million, sixty-four thousand, two hundred thirty-one".