123243431035171 has 2 divisors, whose sum is σ = 123243431035172. Its totient is φ = 123243431035170.

The previous prime is 123243431035091. The next prime is 123243431035229. The reversal of 123243431035171 is 171530134342321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123243431035171 - 2²⁵ = 123243397480739 is a prime.

It is not a weakly prime, because it can be changed into another prime (123243431035271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61621715517585 + 61621715517586.

It is an arithmetic number, because the mean of its divisors is an integer number (61621715517586).

Almost surely, 2^{123243431035171} is an apocalyptic number.

123243431035171 is a deficient number, since it is larger than the sum of its proper divisors (1).

123243431035171 is an equidigital number, since it uses as much as digits as its factorization.

123243431035171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 40.

Adding to 123243431035171 its reverse (171530134342321), we get a palindrome (294773565377492).

The spelling of 123243431035171 in words is "one hundred twenty-three trillion, two hundred forty-three billion, four hundred thirty-one million, thirty-five thousand, one hundred seventy-one".