1321023343144 has 128 divisors (see below), whose sum is σ = 2765669760000. Its totient is φ = 588712126464.

The previous prime is 1321023343093. The next prime is 1321023343151. The reversal of 1321023343144 is 4413433201231.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55263307 + ... + 55287205.

It is an arithmetic number, because the mean of its divisors is an integer number (21606795000).

Almost surely, 2^{1321023343144} is an apocalyptic number.

It is an amenable number.

1321023343144 is an abundant number, since it is smaller than the sum of its proper divisors (1444646416856).

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

1321023343144 is a wasteful number, since it uses less digits than its factorization.

1321023343144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24207 (or 24203 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 1321023343144 its reverse (4413433201231), we get a palindrome (5734456544375).

The spelling of 1321023343144 in words is "one trillion, three hundred twenty-one billion, twenty-three million, three hundred forty-three thousand, one hundred forty-four".