1431311123443 has 4 divisors (see below), whose sum is σ = 1450918125208. Its totient is φ = 1411704121680.

The previous prime is 1431311123423. The next prime is 1431311123477. The reversal of 1431311123443 is 3443211131341.

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 1431311123443 - 2³⁷ = 1293872169971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1431311123423) 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, 9803500773 + ... + 9803500918.

It is an arithmetic number, because the mean of its divisors is an integer number (362729531302).

Almost surely, 2^{1431311123443} is an apocalyptic number.

1431311123443 is a deficient number, since it is larger than the sum of its proper divisors (19607001765).

1431311123443 is an equidigital number, since it uses as much as digits as its factorization.

1431311123443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19607001764.

The product of its digits is 10368, while the sum is 31.

Adding to 1431311123443 its reverse (3443211131341), we get a palindrome (4874522254784).

The spelling of 1431311123443 in words is "one trillion, four hundred thirty-one billion, three hundred eleven million, one hundred twenty-three thousand, four hundred forty-three".