123843117 has 4 divisors (see below), whose sum is σ = 165124160. Its totient is φ = 82562076.

The previous prime is 123843091. The next prime is 123843131. The reversal of 123843117 is 711348321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 711348321 = 3 ⋅237116107.

It is not a de Polignac number, because 123843117 - 2¹² = 123839021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123843817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20640517 + ... + 20640522.

It is an arithmetic number, because the mean of its divisors is an integer number (41281040).

Almost surely, 2^123843117 is an apocalyptic number.

It is an amenable number.

123843117 is a deficient number, since it is larger than the sum of its proper divisors (41281043).

123843117 is an equidigital number, since it uses as much as digits as its factorization.

123843117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41281042.

The product of its digits is 4032, while the sum is 30.

The square root of 123843117 is about 11128.4822415278. The cubic root of 123843117 is about 498.4527060353.

The spelling of 123843117 in words is "one hundred twenty-three million, eight hundred forty-three thousand, one hundred seventeen".