1313021301233 has 4 divisors (see below), whose sum is σ = 1313028583908. Its totient is φ = 1313014018560.

The previous prime is 1313021301199. The next prime is 1313021301239. The reversal of 1313021301233 is 3321031203131.

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 820712788624 + 492308512609 = 905932^2 + 701647^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313021301233 - 2¹⁰ = 1313021300209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1313021301199 and 1313021301208.

It is not an unprimeable number, because it can be changed into a prime (1313021301239) 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, 3363848 + ... + 3733833.

It is an arithmetic number, because the mean of its divisors is an integer number (328257145977).

Almost surely, 2^{1313021301233} is an apocalyptic number.

It is an amenable number.

1313021301233 is a deficient number, since it is larger than the sum of its proper divisors (7282675).

1313021301233 is an equidigital number, since it uses as much as digits as its factorization.

1313021301233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7282674.

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

Adding to 1313021301233 its reverse (3321031203131), we get a palindrome (4634052504364).

The spelling of 1313021301233 in words is "one trillion, three hundred thirteen billion, twenty-one million, three hundred one thousand, two hundred thirty-three".