2321312111 has 4 divisors (see below), whose sum is σ = 2321408472. Its totient is φ = 2321215752.

The previous prime is 2321312101. The next prime is 2321312167. The reversal of 2321312111 is 1112131232.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2321312111 is a prime.

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 2321312111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321312101) 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, 24065 + ... + 72261.

It is an arithmetic number, because the mean of its divisors is an integer number (580352118).

Almost surely, 2^2321312111 is an apocalyptic number.

2321312111 is a deficient number, since it is larger than the sum of its proper divisors (96361).

2321312111 is an equidigital number, since it uses as much as digits as its factorization.

2321312111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96360.

The product of its digits is 72, while the sum is 17.

The square root of 2321312111 is about 48179.9970008301. The cubic root of 2321312111 is about 1324.0707115859.

Adding to 2321312111 its reverse (1112131232), we get a palindrome (3433443343).

It can be divided in two parts, 2321 and 312111, that added together give a cube (314432 = 68³).

The spelling of 2321312111 in words is "two billion, three hundred twenty-one million, three hundred twelve thousand, one hundred eleven".