311320303111 has 4 divisors (see below), whose sum is σ = 311325602112.
Its totient is φ = 311315004112.
The previous prime is 311320303097. The next prime is 311320303157. The reversal of 311320303111 is 111303023113.
Adding to 311320303111 its reverse (111303023113), we get a palindrome (422623326224).
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111303023113 = 349 ⋅318919837.
It is a cyclic number.
It is not a de Polignac number, because 311320303111 - 213 = 311320294919 is a prime.
It is a super-2 number, since 2×3113203031112 (a number of 24 digits) contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (311320303171) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2560375 + ... + 2679208.
It is an arithmetic number, because the mean of its divisors is an integer number (77831400528).
Almost surely, 2311320303111 is an apocalyptic number.
311320303111 is a deficient number, since it is larger than the sum of its proper divisors (5299001).
311320303111 is an equidigital number, since it uses as much as digits as its factorization.
311320303111 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5299000.
The product of its (nonzero) digits is 162, while the sum is 19.
The spelling of 311320303111 in words is "three hundred eleven billion, three hundred twenty million, three hundred three thousand, one hundred eleven".