1231444444444 has 12 divisors (see below), whose sum is σ = 2161238234904. Its totient is φ = 613947805904.

The previous prime is 1231444444441. The next prime is 1231444444463. The reversal of 1231444444444 is 4444444441321.

1231444444444 is a modest number, since divided by 4444444 gives 123144 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 1231444444444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231444444441) 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, 443602519 + ... + 443605294.

It is an arithmetic number, because the mean of its divisors is an integer number (180103186242).

Almost surely, 2^{1231444444444} is an apocalyptic number.

It is an amenable number.

1231444444444 is a deficient number, since it is larger than the sum of its proper divisors (929793790460).

1231444444444 is a wasteful number, since it uses less digits than its factorization.

1231444444444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887208164 (or 887208162 counting only the distinct ones).

The product of its digits is 1572864, while the sum is 43.

Adding to 1231444444444 its reverse (4444444441321), we get a palindrome (5675888885765).

The spelling of 1231444444444 in words is "one trillion, two hundred thirty-one billion, four hundred forty-four million, four hundred forty-four thousand, four hundred forty-four".