1231442112443 has 2 divisors, whose sum is σ = 1231442112444. Its totient is φ = 1231442112442.

The previous prime is 1231442112437. The next prime is 1231442112521. The reversal of 1231442112443 is 3442112441321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1231442112443 - 2⁴ = 1231442112427 is a prime.

It is not a weakly prime, because it can be changed into another prime (1231442112403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615721056221 + 615721056222.

It is an arithmetic number, because the mean of its divisors is an integer number (615721056222).

Almost surely, 2^{1231442112443} is an apocalyptic number.

1231442112443 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231442112443 is an equidigital number, since it uses as much as digits as its factorization.

1231442112443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18432, while the sum is 32.

Adding to 1231442112443 its reverse (3442112441321), we get a palindrome (4673554553764).

The spelling of 1231442112443 in words is "one trillion, two hundred thirty-one billion, four hundred forty-two million, one hundred twelve thousand, four hundred forty-three".