1331321023313 has 4 divisors (see below), whose sum is σ = 1353885786480. Its totient is φ = 1308756260148.

The previous prime is 1331321023303. The next prime is 1331321023327. The reversal of 1331321023313 is 3133201231331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1331321023313 - 2⁸ = 1331321023057 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1331321023303) 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 3 ways as a sum of consecutive naturals, for example, 11282381495 + ... + 11282381612.

It is an arithmetic number, because the mean of its divisors is an integer number (338471446620).

Almost surely, 2^{1331321023313} is an apocalyptic number.

It is an amenable number.

1331321023313 is a deficient number, since it is larger than the sum of its proper divisors (22564763167).

1331321023313 is an equidigital number, since it uses as much as digits as its factorization.

1331321023313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22564763166.

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 1331321023313 its reverse (3133201231331), we get a palindrome (4464522254644).

The spelling of 1331321023313 in words is "one trillion, three hundred thirty-one billion, three hundred twenty-one million, twenty-three thousand, three hundred thirteen".