131320508 has 24 divisors (see below), whose sum is σ = 251816880. Its totient is φ = 59425920.

The previous prime is 131320507. The next prime is 131320513. The reversal of 131320508 is 805023131.

131320508 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131320507) 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 7 ways as a sum of consecutive naturals, for example, 3560 + ... + 16592.

It is an arithmetic number, because the mean of its divisors is an integer number (10492370).

Almost surely, 2^131320508 is an apocalyptic number.

It is an amenable number.

131320508 is a deficient number, since it is larger than the sum of its proper divisors (120496372).

131320508 is a wasteful number, since it uses less digits than its factorization.

131320508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13277 (or 13275 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 131320508 is about 11459.5160456278. The cubic root of 131320508 is about 508.2891641159.

Adding to 131320508 its reverse (805023131), we get a palindrome (936343639).

The spelling of 131320508 in words is "one hundred thirty-one million, three hundred twenty thousand, five hundred eight".