1431221444444 has 96 divisors (see below), whose sum is σ = 2927300451264. Its totient is φ = 605059153920.

The previous prime is 1431221444413. The next prime is 1431221444449. The reversal of 1431221444444 is 4444441221341.

It is a junction number, because it is equal to n+sod(n) for n = 1431221444398 and 1431221444407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1431221444449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49105844 + ... + 49134980.

It is an arithmetic number, because the mean of its divisors is an integer number (30492713034).

Almost surely, 2^{1431221444444} is an apocalyptic number.

It is an amenable number.

1431221444444 is an abundant number, since it is smaller than the sum of its proper divisors (1496079006820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1431221444444 is a wasteful number, since it uses less digits than its factorization.

1431221444444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29943 (or 29941 counting only the distinct ones).

The product of its digits is 196608, while the sum is 38.

Adding to 1431221444444 its reverse (4444441221341), we get a palindrome (5875662665785).

The spelling of 1431221444444 in words is "one trillion, four hundred thirty-one billion, two hundred twenty-one million, four hundred forty-four thousand, four hundred forty-four".