131520352240 has 160 divisors (see below), whose sum is σ = 325649782080. Its totient is φ = 49317445632.

The previous prime is 131520352199. The next prime is 131520352247. The reversal of 131520352240 is 42253025131.

It is a junction number, because it is equal to n+sod(n) for n = 131520352199 and 131520352208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131520352247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11921607 + ... + 11932633.

It is an arithmetic number, because the mean of its divisors is an integer number (2035311138).

Almost surely, 2^131520352240 is an apocalyptic number.

131520352240 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 131520352240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162824891040).

131520352240 is an abundant number, since it is smaller than the sum of its proper divisors (194129429840).

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

131520352240 is a wasteful number, since it uses less digits than its factorization.

131520352240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11219 (or 11213 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 131520352240 its reverse (42253025131), we get a palindrome (173773377371).

The spelling of 131520352240 in words is "one hundred thirty-one billion, five hundred twenty million, three hundred fifty-two thousand, two hundred forty".