111103100231 has 4 divisors (see below), whose sum is σ = 111535408272. Its totient is φ = 110670792192.

The previous prime is 111103100219. The next prime is 111103100291. The reversal of 111103100231 is 132001301111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132001301111 = 53 ⋅2490590587.

It is a cyclic number.

It is not a de Polignac number, because 111103100231 - 2¹⁰ = 111103099207 is a prime.

It is a super-2 number, since 2×111103100231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111103100201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216153635 + ... + 216154148.

It is an arithmetic number, because the mean of its divisors is an integer number (27883852068).

Almost surely, 2^111103100231 is an apocalyptic number.

111103100231 is a deficient number, since it is larger than the sum of its proper divisors (432308041).

111103100231 is an equidigital number, since it uses as much as digits as its factorization.

111103100231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432308040.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 111103100231 its reverse (132001301111), we get a palindrome (243104401342).

The spelling of 111103100231 in words is "one hundred eleven billion, one hundred three million, one hundred thousand, two hundred thirty-one".