131302120031220 has 144 divisors (see below), whose sum is σ = 388469068404480. Its totient is φ = 33132169711872.

The previous prime is 131302120031191. The next prime is 131302120031221. The reversal of 131302120031220 is 22130021203131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131302120031221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14922661 + ... + 22029299.

It is an arithmetic number, because the mean of its divisors is an integer number (2697701863920).

Almost surely, 2^{131302120031220} is an apocalyptic number.

131302120031220 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 131302120031220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194234534202240).

131302120031220 is an abundant number, since it is smaller than the sum of its proper divisors (257166948373260).

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

131302120031220 is a wasteful number, since it uses less digits than its factorization.

131302120031220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7107542 (or 7107521 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 131302120031220 its reverse (22130021203131), we get a palindrome (153432141234351).

The spelling of 131302120031220 in words is "one hundred thirty-one trillion, three hundred two billion, one hundred twenty million, thirty-one thousand, two hundred twenty".