131131244144 has 20 divisors (see below), whose sum is σ = 256315167696. Its totient is φ = 64985394432.

The previous prime is 131131244141. The next prime is 131131244159. The reversal of 131131244144 is 441442131131.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131131244141) 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, 36262364 + ... + 36265979.

Almost surely, 2^131131244144 is an apocalyptic number.

It is an amenable number.

131131244144 is a deficient number, since it is larger than the sum of its proper divisors (125183923552).

131131244144 is a wasteful number, since it uses less digits than its factorization.

131131244144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72528464 (or 72528458 counting only the distinct ones).

The product of its digits is 4608, while the sum is 29.

Adding to 131131244144 its reverse (441442131131), we get a palindrome (572573375275).

The spelling of 131131244144 in words is "one hundred thirty-one billion, one hundred thirty-one million, two hundred forty-four thousand, one hundred forty-four".