671117123 has 4 divisors (see below), whose sum is σ = 673997688. Its totient is φ = 668236560.

The previous prime is 671117099. The next prime is 671117147. The reversal of 671117123 is 321711176.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (671117099) and next prime (671117147).

It is a cyclic number.

It is not a de Polignac number, because 671117123 - 2¹⁰ = 671116099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671117173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1439933 + ... + 1440398.

It is an arithmetic number, because the mean of its divisors is an integer number (168499422).

Almost surely, 2^671117123 is an apocalyptic number.

671117123 is a deficient number, since it is larger than the sum of its proper divisors (2880565).

671117123 is a wasteful number, since it uses less digits than its factorization.

671117123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2880564.

The product of its digits is 1764, while the sum is 29.

The square root of 671117123 is about 25905.9283369657. The cubic root of 671117123 is about 875.5200709075.

Adding to 671117123 its reverse (321711176), we get a palindrome (992828299).

The spelling of 671117123 in words is "six hundred seventy-one million, one hundred seventeen thousand, one hundred twenty-three".