123134111 has 16 divisors (see below), whose sum is σ = 139382208. Its totient is φ = 108134400.

The previous prime is 123134083. The next prime is 123134153. The reversal of 123134111 is 111431321.

It is a cyclic number.

It is not a de Polignac number, because 123134111 - 2¹⁴ = 123117727 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 123134111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123134161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12191 + ... + 19871.

It is an arithmetic number, because the mean of its divisors is an integer number (8711388).

Almost surely, 2^123134111 is an apocalyptic number.

123134111 is a deficient number, since it is larger than the sum of its proper divisors (16248097).

123134111 is a wasteful number, since it uses less digits than its factorization.

123134111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7762.

The product of its digits is 72, while the sum is 17.

The square root of 123134111 is about 11096.5810500352. The cubic root of 123134111 is about 497.4996654964.

Adding to 123134111 its reverse (111431321), we get a palindrome (234565432).

The spelling of 123134111 in words is "one hundred twenty-three million, one hundred thirty-four thousand, one hundred eleven".