123217171 has 8 divisors (see below), whose sum is σ = 153621504. Its totient is φ = 96013320.

The previous prime is 123217153. The next prime is 123217181. The reversal of 123217171 is 171712321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123217171 - 2⁷ = 123217043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123217111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 800035 + ... + 800188.

It is an arithmetic number, because the mean of its divisors is an integer number (19202688).

Almost surely, 2^123217171 is an apocalyptic number.

123217171 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

123217171 is a deficient number, since it is larger than the sum of its proper divisors (30404333).

123217171 is a wasteful number, since it uses less digits than its factorization.

123217171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1600241.

The product of its digits is 588, while the sum is 25.

The square root of 123217171 is about 11100.3230133181. The cubic root of 123217171 is about 497.6115029991.

Adding to 123217171 its reverse (171712321), we get a palindrome (294929492).

The spelling of 123217171 in words is "one hundred twenty-three million, two hundred seventeen thousand, one hundred seventy-one".