131112140020 has 24 divisors (see below), whose sum is σ = 275611699944. Its totient is φ = 52392245376.

The previous prime is 131112140017. The next prime is 131112140077. The reversal of 131112140020 is 20041211131.

It can be written as a sum of positive squares in 4 ways, for example, as 65393741284 + 65718398736 = 255722^2 + 256356^2 .

It is a junction number, because it is equal to n+sod(n) for n = 131112139976 and 131112140003.

It is a congruent number.

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, 3267727 + ... + 3307606.

It is an arithmetic number, because the mean of its divisors is an integer number (11483820831).

Almost surely, 2^131112140020 is an apocalyptic number.

131112140020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131112140020 is an abundant number, since it is smaller than the sum of its proper divisors (144499559924).

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

131112140020 is a wasteful number, since it uses less digits than its factorization.

131112140020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6576339 (or 6576337 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 131112140020 its reverse (20041211131), we get a palindrome (151153351151).

The spelling of 131112140020 in words is "one hundred thirty-one billion, one hundred twelve million, one hundred forty thousand, twenty".