1313120021333 has 4 divisors (see below), whose sum is σ = 1313122334700. Its totient is φ = 1313117707968.

The previous prime is 1313120021309. The next prime is 1313120021341. The reversal of 1313120021333 is 3331200213131.

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 812525565604 + 500594455729 = 901402^2 + 707527^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313120021333 - 2³⁸ = 1038242114389 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1313120021299 and 1313120021308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313120021303) 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, 342143 + ... + 1656291.

It is an arithmetic number, because the mean of its divisors is an integer number (328280583675).

Almost surely, 2^{1313120021333} is an apocalyptic number.

It is an amenable number.

1313120021333 is a deficient number, since it is larger than the sum of its proper divisors (2313367).

1313120021333 is an equidigital number, since it uses as much as digits as its factorization.

1313120021333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2313366.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 1313120021333 its reverse (3331200213131), we get a palindrome (4644320234464).

The spelling of 1313120021333 in words is "one trillion, three hundred thirteen billion, one hundred twenty million, twenty-one thousand, three hundred thirty-three".