131111123103 has 12 divisors (see below), whose sum is σ = 189510111648. Its totient is φ = 87348625440.

The previous prime is 131111123071. The next prime is 131111123149. The reversal of 131111123103 is 301321111131.

It is not a de Polignac number, because 131111123103 - 2⁵ = 131111123071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131111123503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4885038 + ... + 4911803.

It is an arithmetic number, because the mean of its divisors is an integer number (15792509304).

Almost surely, 2^131111123103 is an apocalyptic number.

131111123103 is a deficient number, since it is larger than the sum of its proper divisors (58398988545).

131111123103 is a wasteful number, since it uses less digits than its factorization.

131111123103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9798334 (or 9798331 counting only the distinct ones).

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

Adding to 131111123103 its reverse (301321111131), we get a palindrome (432432234234).

The spelling of 131111123103 in words is "one hundred thirty-one billion, one hundred eleven million, one hundred twenty-three thousand, one hundred three".