111311212323 has 4 divisors (see below), whose sum is σ = 148414949768. Its totient is φ = 74207474880.

The previous prime is 111311212319. The next prime is 111311212333. The reversal of 111311212323 is 323212113111.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 111311212323 - 2² = 111311212319 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 111311212323.

It is not an unprimeable number, because it can be changed into a prime (111311212333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18551868718 + ... + 18551868723.

It is an arithmetic number, because the mean of its divisors is an integer number (37103737442).

Almost surely, 2^111311212323 is an apocalyptic number.

111311212323 is a deficient number, since it is larger than the sum of its proper divisors (37103737445).

111311212323 is an equidigital number, since it uses as much as digits as its factorization.

111311212323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37103737444.

The product of its digits is 216, while the sum is 21.

Adding to 111311212323 its reverse (323212113111), we get a palindrome (434523325434).

The spelling of 111311212323 in words is "one hundred eleven billion, three hundred eleven million, two hundred twelve thousand, three hundred twenty-three".