1331320013333 has 4 divisors (see below), whose sum is σ = 1331387623020. Its totient is φ = 1331252403648.

The previous prime is 1331320013321. The next prime is 1331320013417. The reversal of 1331320013333 is 3333100231331.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 59337549649 + 1271982463684 = 243593^2 + 1127822^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331320013333 - 2⁸ = 1331320013077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331520013333) 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, 33775298 + ... + 33814691.

It is an arithmetic number, because the mean of its divisors is an integer number (332846905755).

Almost surely, 2^{1331320013333} is an apocalyptic number.

It is an amenable number.

1331320013333 is a deficient number, since it is larger than the sum of its proper divisors (67609687).

1331320013333 is an equidigital number, since it uses as much as digits as its factorization.

1331320013333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67609686.

The product of its (nonzero) digits is 4374, while the sum is 26.

Adding to 1331320013333 its reverse (3333100231331), we get a palindrome (4664420244664).

The spelling of 1331320013333 in words is "one trillion, three hundred thirty-one billion, three hundred twenty million, thirteen thousand, three hundred thirty-three".