1231043443443 has 48 divisors (see below), whose sum is σ = 2021781216000. Its totient is φ = 742337434080.

The previous prime is 1231043443433. The next prime is 1231043443463. The reversal of 1231043443443 is 3443443401321.

1231043443443 is a `hidden beast` number, since 1 + 231 + 0 + 43 + 44 + 344 + 3 = 666.

It is not a de Polignac number, because 1231043443443 - 2⁹ = 1231043442931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1231043443398 and 1231043443407.

It is not an unprimeable number, because it can be changed into a prime (1231043443403) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 625228 + ... + 1689081.

It is an arithmetic number, because the mean of its divisors is an integer number (42120442000).

Almost surely, 2^{1231043443443} is an apocalyptic number.

1231043443443 is a deficient number, since it is larger than the sum of its proper divisors (790737772557).

1231043443443 is a wasteful number, since it uses less digits than its factorization.

1231043443443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2314534 (or 2314522 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 36.

Adding to 1231043443443 its reverse (3443443401321), we get a palindrome (4674486844764).

The spelling of 1231043443443 in words is "one trillion, two hundred thirty-one billion, forty-three million, four hundred forty-three thousand, four hundred forty-three".