131331500220540 has 96 divisors (see below), whose sum is σ = 383779800423936. Its totient is φ = 33493512912640.

The previous prime is 131331500220533. The next prime is 131331500220593. The reversal of 131331500220540 is 45022005133131.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 131331500220498 and 131331500220507.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 491935 + ... + 16214345.

It is an arithmetic number, because the mean of its divisors is an integer number (3997706254416).

Almost surely, 2^{131331500220540} is an apocalyptic number.

131331500220540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131331500220540 is an abundant number, since it is smaller than the sum of its proper divisors (252448300203396).

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

131331500220540 is a wasteful number, since it uses less digits than its factorization.

131331500220540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15728499 (or 15728497 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 131331500220540 its reverse (45022005133131), we get a palindrome (176353505353671).

The spelling of 131331500220540 in words is "one hundred thirty-one trillion, three hundred thirty-one billion, five hundred million, two hundred twenty thousand, five hundred forty".