131130310021020 has 288 divisors, whose sum is σ = 402340040374272. Its totient is φ = 34568575524864.

The previous prime is 131130310021013. The next prime is 131130310021091. The reversal of 131130310021020 is 20120013031131.

131130310021020 is a `hidden beast` number, since 1 + 31 + 1 + 303 + 100 + 210 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 131130310020984 and 131130310021002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3608112969 + ... + 3608149311.

Almost surely, 2^{131130310021020} is an apocalyptic number.

131130310021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131130310021020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201170020187136).

131130310021020 is an abundant number, since it is smaller than the sum of its proper divisors (271209730353252).

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

131130310021020 is a wasteful number, since it uses less digits than its factorization.

131130310021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37201 (or 37196 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 131130310021020 its reverse (20120013031131), we get a palindrome (151250323052151).

The spelling of 131130310021020 in words is "one hundred thirty-one trillion, one hundred thirty billion, three hundred ten million, twenty-one thousand, twenty".