113123123123 has 4 divisors (see below), whose sum is σ = 113124294360. Its totient is φ = 113121951888.

The previous prime is 113123123119. The next prime is 113123123143. The reversal of 113123123123 is 321321321311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321321321311 = 18397 ⋅17465963.

It is a cyclic number.

It is not a de Polignac number, because 113123123123 - 2² = 113123123119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113123123143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 426293 + ... + 638726.

It is an arithmetic number, because the mean of its divisors is an integer number (28281073590).

Almost surely, 2^113123123123 is an apocalyptic number.

113123123123 is a deficient number, since it is larger than the sum of its proper divisors (1171237).

113123123123 is a wasteful number, since it uses less digits than its factorization.

113123123123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171236.

The product of its digits is 648, while the sum is 23.

Adding to 113123123123 its reverse (321321321311), we get a palindrome (434444444434).

The spelling of 113123123123 in words is "one hundred thirteen billion, one hundred twenty-three million, one hundred twenty-three thousand, one hundred twenty-three".