131311103103 has 16 divisors (see below), whose sum is σ = 197832172800. Its totient is φ = 86056993080.

The previous prime is 131311103101. The next prime is 131311103107. The reversal of 131311103103 is 301301113131.

131311103103 is a `hidden beast` number, since 1 + 31 + 311 + 10 + 310 + 3 = 666.

It is not a de Polignac number, because 131311103103 - 2¹ = 131311103101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131311103101) 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, 41213443 + ... + 41216628.

It is an arithmetic number, because the mean of its divisors is an integer number (12364510800).

Almost surely, 2^131311103103 is an apocalyptic number.

131311103103 is a deficient number, since it is larger than the sum of its proper divisors (66521069697).

131311103103 is an equidigital number, since it uses as much as digits as its factorization.

131311103103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82430139 (or 82430133 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 18.

Adding to 131311103103 its reverse (301301113131), we get a palindrome (432612216234).

The spelling of 131311103103 in words is "one hundred thirty-one billion, three hundred eleven million, one hundred three thousand, one hundred three".