131115310250520 has 256 divisors, whose sum is σ = 405665177702400. Its totient is φ = 33881981253120.

The previous prime is 131115310250513. The next prime is 131115310250531. The reversal of 131115310250520 is 25052013511131.

It is a super-2 number, since 2×131115310250520² (a number of 29 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3054641779 + ... + 3054684701.

It is an arithmetic number, because the mean of its divisors is an integer number (1584629600400).

Almost surely, 2^{131115310250520} is an apocalyptic number.

131115310250520 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 131115310250520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202832588851200).

131115310250520 is an abundant number, since it is smaller than the sum of its proper divisors (274549867451880).

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

131115310250520 is a wasteful number, since it uses less digits than its factorization.

131115310250520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47630 (or 47626 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 30.

Adding to 131115310250520 its reverse (25052013511131), we get a palindrome (156167323761651).

The spelling of 131115310250520 in words is "one hundred thirty-one trillion, one hundred fifteen billion, three hundred ten million, two hundred fifty thousand, five hundred twenty".