313313222221313 has 4 divisors (see below), whose sum is σ = 313313606920260. Its totient is φ = 313312837522368.

The previous prime is 313313222221309. The next prime is 313313222221319. The reversal of 313313222221313 is 313122222313313.

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 123918596488129 + 189394625733184 = 11131873^2 + 13762072^2 .

It is a cyclic number.

It is not a de Polignac number, because 313313222221313 - 2² = 313313222221309 is a prime.

It is a super-3 number, since 3×313313222221313³ (a number of 44 digits) contains 333 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 313313222221313.

It is not an unprimeable number, because it can be changed into a prime (313313222221319) 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, 191125220 + ... + 192757557.

It is an arithmetic number, because the mean of its divisors is an integer number (78328401730065).

Almost surely, 2^{313313222221313} is an apocalyptic number.

It is an amenable number.

313313222221313 is a deficient number, since it is larger than the sum of its proper divisors (384698947).

313313222221313 is an equidigital number, since it uses as much as digits as its factorization.

313313222221313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384698946.

The product of its digits is 23328, while the sum is 32.

Adding to 313313222221313 its reverse (313122222313313), we get a palindrome (626435444534626).

The spelling of 313313222221313 in words is "three hundred thirteen trillion, three hundred thirteen billion, two hundred twenty-two million, two hundred twenty-one thousand, three hundred thirteen".