1431244221443 has 4 divisors (see below), whose sum is σ = 1431460460760. Its totient is φ = 1431027982128.

The previous prime is 1431244221437. The next prime is 1431244221457. The reversal of 1431244221443 is 3441224421341.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1431244221443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1431244221943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108109730 + ... + 108122967.

It is an arithmetic number, because the mean of its divisors is an integer number (357865115190).

Almost surely, 2^{1431244221443} is an apocalyptic number.

1431244221443 is a deficient number, since it is larger than the sum of its proper divisors (216239317).

1431244221443 is an equidigital number, since it uses as much as digits as its factorization.

1431244221443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216239316.

The product of its digits is 73728, while the sum is 35.

Adding to 1431244221443 its reverse (3441224421341), we get a palindrome (4872468642784).

The spelling of 1431244221443 in words is "one trillion, four hundred thirty-one billion, two hundred forty-four million, two hundred twenty-one thousand, four hundred forty-three".