313221111311 has 4 divisors (see below), whose sum is σ = 313656746400. Its totient is φ = 312785476224.

The previous prime is 313221111283. The next prime is 313221111353. The reversal of 313221111311 is 113111122313.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313221111311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313221116311) 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, 217816466 + ... + 217817903.

It is an arithmetic number, because the mean of its divisors is an integer number (78414186600).

Almost surely, 2^313221111311 is an apocalyptic number.

313221111311 is a deficient number, since it is larger than the sum of its proper divisors (435635089).

313221111311 is an equidigital number, since it uses as much as digits as its factorization.

313221111311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435635088.

The product of its digits is 108, while the sum is 20.

Adding to 313221111311 its reverse (113111122313), we get a palindrome (426332233624).

The spelling of 313221111311 in words is "three hundred thirteen billion, two hundred twenty-one million, one hundred eleven thousand, three hundred eleven".