1431444005 has 4 divisors (see below), whose sum is σ = 1717732812. Its totient is φ = 1145155200.

The previous prime is 1431443987. The next prime is 1431444011. The reversal of 1431444005 is 5004441341.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1141831681 + 289612324 = 33791^2 + 17018^2 .

It is not a de Polignac number, because 1431444005 - 2²⁴ = 1414666789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 143144396 + ... + 143144405.

It is an arithmetic number, because the mean of its divisors is an integer number (429433203).

Almost surely, 2^1431444005 is an apocalyptic number.

It is an amenable number.

1431444005 is a deficient number, since it is larger than the sum of its proper divisors (286288807).

1431444005 is an equidigital number, since it uses as much as digits as its factorization.

1431444005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286288806.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 1431444005 is about 37834.4288314228. The cubic root of 1431444005 is about 1127.0022627577.

Adding to 1431444005 its reverse (5004441341), we get a palindrome (6435885346).

The spelling of 1431444005 in words is "one billion, four hundred thirty-one million, four hundred forty-four thousand, five".