131304443 has 8 divisors (see below), whose sum is σ = 133333200. Its totient is φ = 129282048.

The previous prime is 131304403. The next prime is 131304457. The reversal of 131304443 is 344403131.

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

It is a cyclic number.

It is not a de Polignac number, because 131304443 - 2¹⁸ = 131042299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131304403) 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, 54968 + ... + 57306.

It is an arithmetic number, because the mean of its divisors is an integer number (16666650).

Almost surely, 2^131304443 is an apocalyptic number.

131304443 is a deficient number, since it is larger than the sum of its proper divisors (2028757).

131304443 is an equidigital number, since it uses as much as digits as its factorization.

131304443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3181.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 131304443 is about 11458.8150783578. The cubic root of 131304443 is about 508.2684362074.

Adding to 131304443 its reverse (344403131), we get a palindrome (475707574).

The spelling of 131304443 in words is "one hundred thirty-one million, three hundred four thousand, four hundred forty-three".