1331243541445 has 32 divisors (see below), whose sum is σ = 1686980908800. Its totient is φ = 1006997343744.

The previous prime is 1331243541413. The next prime is 1331243541491. The reversal of 1331243541445 is 5441453421331.

It is not a de Polignac number, because 1331243541445 - 2⁵ = 1331243541413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1331243541398 and 1331243541407.

It is a congruent number.

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, 1954129 + ... + 2545801.

It is an arithmetic number, because the mean of its divisors is an integer number (52718153400).

Almost surely, 2^{1331243541445} is an apocalyptic number.

It is an amenable number.

1331243541445 is a deficient number, since it is larger than the sum of its proper divisors (355737367355).

1331243541445 is a wasteful number, since it uses less digits than its factorization.

1331243541445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592029.

The product of its digits is 345600, while the sum is 40.

Adding to 1331243541445 its reverse (5441453421331), we get a palindrome (6772696962776).

The spelling of 1331243541445 in words is "one trillion, three hundred thirty-one billion, two hundred forty-three million, five hundred forty-one thousand, four hundred forty-five".