131301233120020 has 48 divisors (see below), whose sum is σ = 278157937328208. Its totient is φ = 52059661516800.

The previous prime is 131301233119999. The next prime is 131301233120069. The reversal of 131301233120020 is 20021332103131.

It can be written as a sum of positive squares in 8 ways, for example, as 52407113476 + 131248826006544 = 228926^2 + 11456388^2 .

It is a junction number, because it is equal to n+sod(n) for n = 131301233119973 and 131301233120000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33757881 + ... + 37445920.

It is an arithmetic number, because the mean of its divisors is an integer number (5794957027671).

Almost surely, 2^{131301233120020} is an apocalyptic number.

131301233120020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131301233120020 is an abundant number, since it is smaller than the sum of its proper divisors (146856704208188).

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

131301233120020 is a wasteful number, since it uses less digits than its factorization.

131301233120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71204620 (or 71204618 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 131301233120020 its reverse (20021332103131), we get a palindrome (151322565223151).

The spelling of 131301233120020 in words is "one hundred thirty-one trillion, three hundred one billion, two hundred thirty-three million, one hundred twenty thousand, twenty".