1331040444442 has 8 divisors (see below), whose sum is σ = 2050521765876. Its totient is φ = 647533189152.

The previous prime is 1331040444439. The next prime is 1331040444449. The reversal of 1331040444442 is 2444440401331.

It can be written as a sum of positive squares in 2 ways, for example, as 1261153706121 + 69886738321 = 1123011^2 + 264361^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1331040444398 and 1331040444407.

It is not an unprimeable number, because it can be changed into a prime (1331040444449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8993516443 + ... + 8993516590.

Almost surely, 2^{1331040444442} is an apocalyptic number.

1331040444442 is a deficient number, since it is larger than the sum of its proper divisors (719481321434).

1331040444442 is a wasteful number, since it uses less digits than its factorization.

1331040444442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17987033072.

The product of its (nonzero) digits is 73728, while the sum is 34.

Adding to 1331040444442 its reverse (2444440401331), we get a palindrome (3775480845773).

The spelling of 1331040444442 in words is "one trillion, three hundred thirty-one billion, forty million, four hundred forty-four thousand, four hundred forty-two".