1431231443 has 4 divisors (see below), whose sum is σ = 1440012168. Its totient is φ = 1422450720.

The previous prime is 1431231433. The next prime is 1431231463. The reversal of 1431231443 is 3441321341.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1431231443 - 2⁴ = 1431231427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1431231413) 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 3 ways as a sum of consecutive naturals, for example, 4390118 + ... + 4390443.

It is an arithmetic number, because the mean of its divisors is an integer number (360003042).

Almost surely, 2^1431231443 is an apocalyptic number.

1431231443 is a deficient number, since it is larger than the sum of its proper divisors (8780725).

1431231443 is an equidigital number, since it uses as much as digits as its factorization.

1431231443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8780724.

The product of its digits is 3456, while the sum is 26.

The square root of 1431231443 is about 37831.6196190435. The cubic root of 1431231443 is about 1126.9464753354.

Adding to 1431231443 its reverse (3441321341), we get a palindrome (4872552784).

The spelling of 1431231443 in words is "one billion, four hundred thirty-one million, two hundred thirty-one thousand, four hundred forty-three".