312323221111 has 16 divisors (see below), whose sum is σ = 379745660160. Its totient is φ = 253163767680.

The previous prime is 312323221079. The next prime is 312323221121. The reversal of 312323221111 is 111122323213.

It is a cyclic number.

It is not a de Polignac number, because 312323221111 - 2⁵ = 312323221079 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 (312323221121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43948491 + ... + 43955596.

It is an arithmetic number, because the mean of its divisors is an integer number (23734103760).

Almost surely, 2^312323221111 is an apocalyptic number.

312323221111 is a deficient number, since it is larger than the sum of its proper divisors (67422439049).

312323221111 is a wasteful number, since it uses less digits than its factorization.

312323221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87904134.

The product of its digits is 432, while the sum is 22.

Adding to 312323221111 its reverse (111122323213), we get a palindrome (423445544324).

The spelling of 312323221111 in words is "three hundred twelve billion, three hundred twenty-three million, two hundred twenty-one thousand, one hundred eleven".