131312424 has 32 divisors (see below), whose sum is σ = 329466240. Its totient is φ = 43612800.

The previous prime is 131312417. The next prime is 131312449. The reversal of 131312424 is 424213131.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 131312424.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2992 + ... + 16479.

It is an arithmetic number, because the mean of its divisors is an integer number (10295820).

Almost surely, 2^131312424 is an apocalyptic number.

It is an amenable number.

131312424 is an abundant number, since it is smaller than the sum of its proper divisors (198153816).

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

131312424 is a wasteful number, since it uses less digits than its factorization.

131312424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19761 (or 19757 counting only the distinct ones).

The product of its digits is 576, while the sum is 21.

The square root of 131312424 is about 11459.1633202429. The cubic root of 131312424 is about 508.2787339249.

Adding to 131312424 its reverse (424213131), we get a palindrome (555525555).

The spelling of 131312424 in words is "one hundred thirty-one million, three hundred twelve thousand, four hundred twenty-four".