131115312115540 has 24 divisors (see below), whose sum is σ = 281200499177472. Its totient is φ = 51330249849120.

The previous prime is 131115312115483. The next prime is 131115312115549. The reversal of 131115312115540 is 45511213511131.

It is a junction number, because it is equal to n+sod(n) for n = 131115312115496 and 131115312115505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131115312115549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69742186356 + ... + 69742188235.

It is an arithmetic number, because the mean of its divisors is an integer number (11716687465728).

Almost surely, 2^{131115312115540} is an apocalyptic number.

131115312115540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131115312115540 is an abundant number, since it is smaller than the sum of its proper divisors (150085187061932).

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

131115312115540 is a wasteful number, since it uses less digits than its factorization.

131115312115540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139484374647 (or 139484374645 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 34.

Adding to 131115312115540 its reverse (45511213511131), we get a palindrome (176626525626671).

The spelling of 131115312115540 in words is "one hundred thirty-one trillion, one hundred fifteen billion, three hundred twelve million, one hundred fifteen thousand, five hundred forty".