131520011520 has 144 divisors (see below), whose sum is σ = 420211733760. Its totient is φ = 35057836032.

The previous prime is 131520011507. The next prime is 131520011521. The reversal of 131520011520 is 25110025131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131520011521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12394057 + ... + 12404663.

It is an arithmetic number, because the mean of its divisors is an integer number (2918137040).

Almost surely, 2^131520011520 is an apocalyptic number.

131520011520 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 131520011520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210105866880).

131520011520 is an abundant number, since it is smaller than the sum of its proper divisors (288691722240).

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

131520011520 is a wasteful number, since it uses less digits than its factorization.

131520011520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13860 (or 13846 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 21.

Adding to 131520011520 its reverse (25110025131), we get a palindrome (156630036651).

The spelling of 131520011520 in words is "one hundred thirty-one billion, five hundred twenty million, eleven thousand, five hundred twenty".