111310131123 has 8 divisors (see below), whose sum is σ = 164903898000. Its totient is φ = 74206754064.

The previous prime is 111310131113. The next prime is 111310131131. The reversal of 111310131123 is 321131013111.

It is not a de Polignac number, because 111310131123 - 2¹⁴ = 111310114739 is a prime.

It is a super-2 number, since 2×111310131123² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111310131096 and 111310131105.

It is not an unprimeable number, because it can be changed into a prime (111310131113) 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 7 ways as a sum of consecutive naturals, for example, 2061298698 + ... + 2061298751.

It is an arithmetic number, because the mean of its divisors is an integer number (20612987250).

Almost surely, 2^111310131123 is an apocalyptic number.

111310131123 is a deficient number, since it is larger than the sum of its proper divisors (53593766877).

111310131123 is an equidigital number, since it uses as much as digits as its factorization.

111310131123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4122597458 (or 4122597452 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 111310131123 its reverse (321131013111), we get a palindrome (432441144234).

The spelling of 111310131123 in words is "one hundred eleven billion, three hundred ten million, one hundred thirty-one thousand, one hundred twenty-three".