131443424 has 24 divisors (see below), whose sum is σ = 295748208. Its totient is φ = 56332800.

The previous prime is 131443409. The next prime is 131443447. The reversal of 131443424 is 424344131.

It is a junction number, because it is equal to n+sod(n) for n = 131443393 and 131443402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 293177 + ... + 293624.

It is an arithmetic number, because the mean of its divisors is an integer number (12322842).

Almost surely, 2^131443424 is an apocalyptic number.

131443424 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

131443424 is an abundant number, since it is smaller than the sum of its proper divisors (164304784).

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

131443424 is an equidigital number, since it uses as much as digits as its factorization.

131443424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586818 (or 586810 counting only the distinct ones).

The product of its digits is 4608, while the sum is 26.

The square root of 131443424 is about 11464.8778449663. The cubic root of 131443424 is about 508.4477008877.

Adding to 131443424 its reverse (424344131), we get a palindrome (555787555).

The spelling of 131443424 in words is "one hundred thirty-one million, four hundred forty-three thousand, four hundred twenty-four".