131103111012 has 24 divisors (see below), whose sum is σ = 311679095616. Its totient is φ = 42876488928.

The previous prime is 131103111001. The next prime is 131103111031. The reversal of 131103111012 is 210111301131.

It is a junction number, because it is equal to n+sod(n) for n = 131103110982 and 131103111000.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103067848 + ... + 103069119.

It is an arithmetic number, because the mean of its divisors is an integer number (12986628984).

Almost surely, 2^131103111012 is an apocalyptic number.

131103111012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131103111012 is an abundant number, since it is smaller than the sum of its proper divisors (180575984604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131103111012 is a wasteful number, since it uses less digits than its factorization.

131103111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206137027 (or 206137025 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 131103111012 its reverse (210111301131), we get a palindrome (341214412143).

The spelling of 131103111012 in words is "one hundred thirty-one billion, one hundred three million, one hundred eleven thousand, twelve".