111203230231 has 4 divisors (see below), whose sum is σ = 111270343072. Its totient is φ = 111136117392.

The previous prime is 111203230223. The next prime is 111203230247. The reversal of 111203230231 is 132032302111.

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

It is a cyclic number.

It is not a de Polignac number, because 111203230231 - 2³ = 111203230223 is a prime.

It is a super-2 number, since 2×111203230231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111203230199 and 111203230208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111203230261) 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, 33553935 + ... + 33557248.

It is an arithmetic number, because the mean of its divisors is an integer number (27817585768).

Almost surely, 2^111203230231 is an apocalyptic number.

111203230231 is a deficient number, since it is larger than the sum of its proper divisors (67112841).

111203230231 is an equidigital number, since it uses as much as digits as its factorization.

111203230231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67112840.

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

Adding to 111203230231 its reverse (132032302111), we get a palindrome (243235532342).

The spelling of 111203230231 in words is "one hundred eleven billion, two hundred three million, two hundred thirty thousand, two hundred thirty-one".