131320603336 has 64 divisors (see below), whose sum is σ = 271073743920. Its totient is φ = 59270814720.

The previous prime is 131320603321. The next prime is 131320603339. The reversal of 131320603336 is 633306023131.

It can be written as a sum of positive squares in 8 ways, for example, as 53641339236 + 77679264100 = 231606^2 + 278710^2 .

It is a junction number, because it is equal to n+sod(n) for n = 131320603298 and 131320603307.

It is not an unprimeable number, because it can be changed into a prime (131320603339) 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, 1037686 + ... + 1157338.

Almost surely, 2^131320603336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131320603336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135536871960).

131320603336 is an abundant number, since it is smaller than the sum of its proper divisors (139753140584).

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

131320603336 is a wasteful number, since it uses less digits than its factorization.

131320603336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119906 (or 119902 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 31.

Adding to 131320603336 its reverse (633306023131), we get a palindrome (764626626467).

The spelling of 131320603336 in words is "one hundred thirty-one billion, three hundred twenty million, six hundred three thousand, three hundred thirty-six".