131305308 has 24 divisors (see below), whose sum is σ = 307198080. Its totient is φ = 43651440.

The previous prime is 131305303. The next prime is 131305309. The reversal of 131305308 is 803503131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131305303) 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, 9888 + ... + 18983.

It is an arithmetic number, because the mean of its divisors is an integer number (12799920).

Almost surely, 2^131305308 is an apocalyptic number.

It is an amenable number.

131305308 is an abundant number, since it is smaller than the sum of its proper divisors (175892772).

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

131305308 is a wasteful number, since it uses less digits than its factorization.

131305308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29257 (or 29255 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 131305308 is about 11458.8528221633. The cubic root of 131305308 is about 508.2695523190.

Adding to 131305308 its reverse (803503131), we get a palindrome (934808439).

The spelling of 131305308 in words is "one hundred thirty-one million, three hundred five thousand, three hundred eight".