113131123 has 4 divisors (see below), whose sum is σ = 129292720. Its totient is φ = 96969528.

The previous prime is 113131099. The next prime is 113131129. The reversal of 113131123 is 321131311.

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

It is a cyclic number.

It is not a de Polignac number, because 113131123 - 2¹³ = 113122931 is a prime.

It is a super-2 number, since 2×113131123² = 25597301982482258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113131097 and 113131106.

It is not an unprimeable number, because it can be changed into a prime (113131129) 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, 8080788 + ... + 8080801.

It is an arithmetic number, because the mean of its divisors is an integer number (32323180).

Almost surely, 2^113131123 is an apocalyptic number.

113131123 is a deficient number, since it is larger than the sum of its proper divisors (16161597).

113131123 is an equidigital number, since it uses as much as digits as its factorization.

113131123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16161596.

The product of its digits is 54, while the sum is 16.

The square root of 113131123 is about 10636.3115317294. The cubic root of 113131123 is about 483.6457391591.

Adding to 113131123 its reverse (321131311), we get a palindrome (434262434).

The spelling of 113131123 in words is "one hundred thirteen million, one hundred thirty-one thousand, one hundred twenty-three".