111131541123 has 16 divisors (see below), whose sum is σ = 150629338272. Its totient is φ = 72861120000.

The previous prime is 111131541091. The next prime is 111131541133. The reversal of 111131541123 is 321145131111.

It is a happy number.

It is not a de Polignac number, because 111131541123 - 2⁵ = 111131541091 is a prime.

It is a super-2 number, since 2×111131541123² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111131541093 and 111131541102.

It is not an unprimeable number, because it can be changed into a prime (111131541133) 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, 1139173 + ... + 1232873.

It is an arithmetic number, because the mean of its divisors is an integer number (9414333642).

Almost surely, 2^111131541123 is an apocalyptic number.

111131541123 is a deficient number, since it is larger than the sum of its proper divisors (39497797149).

111131541123 is an equidigital number, since it uses as much as digits as its factorization.

111131541123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100246.

The product of its digits is 360, while the sum is 24.

Adding to 111131541123 its reverse (321145131111), we get a palindrome (432276672234).

The spelling of 111131541123 in words is "one hundred eleven billion, one hundred thirty-one million, five hundred forty-one thousand, one hundred twenty-three".