131111113144 has 32 divisors (see below), whose sum is σ = 273887827200. Its totient is φ = 58327959520.

The previous prime is 131111113139. The next prime is 131111113151. The reversal of 131111113144 is 441311111131.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15845854 + ... + 15854125.

It is an arithmetic number, because the mean of its divisors is an integer number (8558994600).

Almost surely, 2^131111113144 is an apocalyptic number.

It is an amenable number.

131111113144 is an abundant number, since it is smaller than the sum of its proper divisors (142776714056).

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

131111113144 is a wasteful number, since it uses less digits than its factorization.

131111113144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31700043 (or 31700039 counting only the distinct ones).

The product of its digits is 144, while the sum is 22.

Adding to 131111113144 its reverse (441311111131), we get a palindrome (572422224275).

The spelling of 131111113144 in words is "one hundred thirty-one billion, one hundred eleven million, one hundred thirteen thousand, one hundred forty-four".