131320336 has 20 divisors (see below), whose sum is σ = 290780992. Its totient is φ = 56280096.

The previous prime is 131320327. The next prime is 131320337. The reversal of 131320336 is 633023131.

It is not an unprimeable number, because it can be changed into a prime (131320337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 586140 + ... + 586363.

Almost surely, 2^131320336 is an apocalyptic number.

131320336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

131320336 is an abundant number, since it is smaller than the sum of its proper divisors (159460656).

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

131320336 is a wasteful number, since it uses less digits than its factorization.

131320336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172518 (or 1172512 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 22.

The square root of 131320336 is about 11459.5085409454. The cubic root of 131320336 is about 508.2889422014.

Adding to 131320336 its reverse (633023131), we get a palindrome (764343467).

The spelling of 131320336 in words is "one hundred thirty-one million, three hundred twenty thousand, three hundred thirty-six".