1313322321331 has 4 divisors (see below), whose sum is σ = 1320127100392. Its totient is φ = 1306517542272.

The previous prime is 1313322321329. The next prime is 1313322321343. The reversal of 1313322321331 is 1331232233131.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1313322321331 - 2¹ = 1313322321329 is a prime.

It is a super-2 number, since 2×1313322321331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1313322321331.

It is not an unprimeable number, because it can be changed into a prime (1313322321361) 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, 3402389241 + ... + 3402389626.

It is an arithmetic number, because the mean of its divisors is an integer number (330031775098).

Almost surely, 2^{1313322321331} is an apocalyptic number.

1313322321331 is a deficient number, since it is larger than the sum of its proper divisors (6804779061).

1313322321331 is an equidigital number, since it uses as much as digits as its factorization.

1313322321331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6804779060.

The product of its digits is 5832, while the sum is 28.

Adding to 1313322321331 its reverse (1331232233131), we get a palindrome (2644554554462).

The spelling of 1313322321331 in words is "one trillion, three hundred thirteen billion, three hundred twenty-two million, three hundred twenty-one thousand, three hundred thirty-one".