111311312323 has 4 divisors (see below), whose sum is σ = 111333530728. Its totient is φ = 111289093920.

The previous prime is 111311312311. The next prime is 111311312447. The reversal of 111311312323 is 323213113111.

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-111311312323 is a prime.

It is the 333634-th Hogben number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111311312294 and 111311312303.

It is not an unprimeable number, because it can be changed into a prime (111311316323) by changing a digit.

It is a nontrivial repunit in base 333633.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11101686 + ... + 11111707.

It is an arithmetic number, because the mean of its divisors is an integer number (27833382682).

Almost surely, 2^111311312323 is an apocalyptic number.

111311312323 is a deficient number, since it is larger than the sum of its proper divisors (22218405).

111311312323 is an equidigital number, since it uses as much as digits as its factorization.

111311312323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22218404.

The product of its digits is 324, while the sum is 22.

Adding to 111311312323 its reverse (323213113111), we get a palindrome (434524425434).

The spelling of 111311312323 in words is "one hundred eleven billion, three hundred eleven million, three hundred twelve thousand, three hundred twenty-three".