1244403321331 has 16 divisors (see below), whose sum is σ = 1317431315200. Its totient is φ = 1172142832608.

The previous prime is 1244403321319. The next prime is 1244403321373. The reversal of 1244403321331 is 1331233044421.

It is not a de Polignac number, because 1244403321331 - 2²⁹ = 1243866450419 is a prime.

It is a super-2 number, since 2×1244403321331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1244403321293 and 1244403321302.

It is not an unprimeable number, because it can be changed into a prime (1244403321311) 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 15 ways as a sum of consecutive naturals, for example, 2966476 + ... + 3359878.

It is an arithmetic number, because the mean of its divisors is an integer number (82339457200).

Almost surely, 2^{1244403321331} is an apocalyptic number.

1244403321331 is a deficient number, since it is larger than the sum of its proper divisors (73027993869).

1244403321331 is a wasteful number, since it uses less digits than its factorization.

1244403321331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394378.

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

Adding to 1244403321331 its reverse (1331233044421), we get a palindrome (2575636365752).

The spelling of 1244403321331 in words is "one trillion, two hundred forty-four billion, four hundred three million, three hundred twenty-one thousand, three hundred thirty-one".