131111042144 has 24 divisors (see below), whose sum is σ = 262995148080. Its totient is φ = 64318623616.

The previous prime is 131111042143. The next prime is 131111042147. The reversal of 131111042144 is 441240111131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131111042143) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 38651324 + ... + 38654715.

It is an arithmetic number, because the mean of its divisors is an integer number (10958131170).

Almost surely, 2^131111042144 is an apocalyptic number.

It is an amenable number.

131111042144 is an abundant number, since it is smaller than the sum of its proper divisors (131884105936).

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

131111042144 is an equidigital number, since it uses as much as digits as its factorization.

131111042144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77306102 (or 77306094 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 131111042144 its reverse (441240111131), we get a palindrome (572351153275).

The spelling of 131111042144 in words is "one hundred thirty-one billion, one hundred eleven million, forty-two thousand, one hundred forty-four".