312223103111 has 4 divisors (see below), whose sum is σ = 312224224152. Its totient is φ = 312221982072.

The previous prime is 312223103047. The next prime is 312223103123. The reversal of 312223103111 is 111301322213.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 111301322213 = 19 ⋅5857964327.

It is a cyclic number.

It is not a de Polignac number, because 312223103111 - 2⁶ = 312223103047 is a prime.

It is a super-2 number, since 2×312223103111² (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 (312223103411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213860 + ... + 818646.

It is an arithmetic number, because the mean of its divisors is an integer number (78056056038).

Almost surely, 2^312223103111 is an apocalyptic number.

312223103111 is a deficient number, since it is larger than the sum of its proper divisors (1121041).

312223103111 is an equidigital number, since it uses as much as digits as its factorization.

312223103111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121040.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 312223103111 its reverse (111301322213), we get a palindrome (423524425324).

The spelling of 312223103111 in words is "three hundred twelve billion, two hundred twenty-three million, one hundred three thousand, one hundred eleven".