111320321023 has 4 divisors (see below), whose sum is σ = 111341854008. Its totient is φ = 111298788040.

The previous prime is 111320320967. The next prime is 111320321039. The reversal of 111320321023 is 320123023111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320123023111 = 37657 ⋅8501023.

It is a cyclic number.

It is not a de Polignac number, because 111320321023 - 2³³ = 102730386431 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 (111320321053) 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, 10758736 + ... + 10769077.

It is an arithmetic number, because the mean of its divisors is an integer number (27835463502).

Almost surely, 2^111320321023 is an apocalyptic number.

111320321023 is a deficient number, since it is larger than the sum of its proper divisors (21532985).

111320321023 is an equidigital number, since it uses as much as digits as its factorization.

111320321023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21532984.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 111320321023 its reverse (320123023111), we get a palindrome (431443344134).

The spelling of 111320321023 in words is "one hundred eleven billion, three hundred twenty million, three hundred twenty-one thousand, twenty-three".