131502202004020 has 24 divisors (see below), whose sum is σ = 277229155830984. Its totient is φ = 52396208111616.

The previous prime is 131502202004011. The next prime is 131502202004027. The reversal of 131502202004020 is 20400202205131.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 45423367378596 + 86078834625424 = 6739686^2 + 9277868^2 .

It is a junction number, because it is equal to n+sod(n) for n = 131502202003982 and 131502202004000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131502202004027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12792037857 + ... + 12792048136.

It is an arithmetic number, because the mean of its divisors is an integer number (11551214826291).

Almost surely, 2^{131502202004020} is an apocalyptic number.

131502202004020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131502202004020 is an abundant number, since it is smaller than the sum of its proper divisors (145726953826964).

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

131502202004020 is a wasteful number, since it uses less digits than its factorization.

131502202004020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25584086259 (or 25584086257 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 131502202004020 its reverse (20400202205131), we get a palindrome (151902404209151).

The spelling of 131502202004020 in words is "one hundred thirty-one trillion, five hundred two billion, two hundred two million, four thousand, twenty".