1304431443 has 12 divisors (see below), whose sum is σ = 2153347248. Its totient is φ = 745389360.

The previous prime is 1304431439. The next prime is 1304431451. The reversal of 1304431443 is 3441344031.

1304431443 is a `hidden beast` number, since 1 + 304 + 4 + 314 + 43 = 666.

It is not a de Polignac number, because 1304431443 - 2² = 1304431439 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1304431493) 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 11 ways as a sum of consecutive naturals, for example, 10352568 + ... + 10352693.

It is an arithmetic number, because the mean of its divisors is an integer number (179445604).

Almost surely, 2^1304431443 is an apocalyptic number.

1304431443 is a deficient number, since it is larger than the sum of its proper divisors (848915805).

1304431443 is a wasteful number, since it uses less digits than its factorization.

1304431443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20705274 (or 20705271 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 1304431443 is about 36116.9135309207. The cubic root of 1304431443 is about 1092.6315908150.

Adding to 1304431443 its reverse (3441344031), we get a palindrome (4745775474).

The spelling of 1304431443 in words is "one billion, three hundred four million, four hundred thirty-one thousand, four hundred forty-three".