171181431888023 has 2 divisors, whose sum is σ = 171181431888024. Its totient is φ = 171181431888022.

The previous prime is 171181431887989. The next prime is 171181431888043. The reversal of 171181431888023 is 320888134181171.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 171181431888023 - 2²² = 171181427693719 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 171181431888023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171181431888043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85590715944011 + 85590715944012.

It is an arithmetic number, because the mean of its divisors is an integer number (85590715944012).

Almost surely, 2^{171181431888023} is an apocalyptic number.

171181431888023 is a deficient number, since it is larger than the sum of its proper divisors (1).

171181431888023 is an equidigital number, since it uses as much as digits as its factorization.

171181431888023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2064384, while the sum is 56.

The spelling of 171181431888023 in words is "one hundred seventy-one trillion, one hundred eighty-one billion, four hundred thirty-one million, eight hundred eighty-eight thousand, twenty-three".