131332450335520 has 144 divisors (see below), whose sum is σ = 360998278470648. Its totient is φ = 45019715112960.

The previous prime is 131332450335497. The next prime is 131332450335529. The reversal of 131332450335520 is 25533054233131.

It can be written as a sum of positive squares in 4 ways, for example, as 129651289148304 + 1681161187216 = 11386452^2 + 1296596^2 .

It is a super-2 number, since 2×131332450335520² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (131332450335529) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39751890 + ... + 42928750.

Almost surely, 2^{131332450335520} is an apocalyptic number.

131332450335520 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 131332450335520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180499139235324).

131332450335520 is an abundant number, since it is smaller than the sum of its proper divisors (229665828135128).

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

131332450335520 is a wasteful number, since it uses less digits than its factorization.

131332450335520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3182163 (or 3182148 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 40.

The spelling of 131332450335520 in words is "one hundred thirty-one trillion, three hundred thirty-two billion, four hundred fifty million, three hundred thirty-five thousand, five hundred twenty".