171011023 has 2 divisors, whose sum is σ = 171011024. Its totient is φ = 171011022.

The previous prime is 171011021. The next prime is 171011033. The reversal of 171011023 is 320110171.

It is a weak prime.

It is an emirp because it is prime and its reverse (320110171) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 171011023 - 2¹ = 171011021 is a prime.

Together with 171011021, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 171010988 and 171011006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171011021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85505511 + 85505512.

It is an arithmetic number, because the mean of its divisors is an integer number (85505512).

Almost surely, 2^171011023 is an apocalyptic number.

171011023 is a deficient number, since it is larger than the sum of its proper divisors (1).

171011023 is an equidigital number, since it uses as much as digits as its factorization.

171011023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42, while the sum is 16.

The square root of 171011023 is about 13077.1182987690. The cubic root of 171011023 is about 555.0618365752.

Adding to 171011023 its reverse (320110171), we get a palindrome (491121194).

The spelling of 171011023 in words is "one hundred seventy-one million, eleven thousand, twenty-three".