131440443 has 8 divisors (see below), whose sum is σ = 175477008. Its totient is φ = 87515424.

The previous prime is 131440433. The next prime is 131440457. The reversal of 131440443 is 344044131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131440443 - 2⁴ = 131440427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131440433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25096 + ... + 29877.

It is an arithmetic number, because the mean of its divisors is an integer number (21934626).

Almost surely, 2^131440443 is an apocalyptic number.

131440443 is a deficient number, since it is larger than the sum of its proper divisors (44036565).

131440443 is an equidigital number, since it uses as much as digits as its factorization.

131440443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55773.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 131440443 is about 11464.7478384830. The cubic root of 131440443 is about 508.4438571705.

Adding to 131440443 its reverse (344044131), we get a palindrome (475484574).

The spelling of 131440443 in words is "one hundred thirty-one million, four hundred forty thousand, four hundred forty-three".