243306023171 has 2 divisors, whose sum is σ = 243306023172. Its totient is φ = 243306023170.

The previous prime is 243306023167. The next prime is 243306023231. The reversal of 243306023171 is 171320603342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243306023171 - 2² = 243306023167 is a prime.

It is a super-2 number, since 2×243306023171² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (243306023071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121653011585 + 121653011586.

It is an arithmetic number, because the mean of its divisors is an integer number (121653011586).

Almost surely, 2^243306023171 is an apocalyptic number.

243306023171 is a deficient number, since it is larger than the sum of its proper divisors (1).

243306023171 is an equidigital number, since it uses as much as digits as its factorization.

243306023171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 32.

The spelling of 243306023171 in words is "two hundred forty-three billion, three hundred six million, twenty-three thousand, one hundred seventy-one".