111132312231 has 4 divisors (see below), whose sum is σ = 148176416312. Its totient is φ = 74088208152.

The previous prime is 111132312169. The next prime is 111132312251. The reversal of 111132312231 is 132213231111.

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

It is not a de Polignac number, because 111132312231 - 2⁶ = 111132312167 is a prime.

It is a super-2 number, since 2×111132312231² (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 = 111132312198 and 111132312207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111132312251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18522052036 + ... + 18522052041.

It is an arithmetic number, because the mean of its divisors is an integer number (37044104078).

Almost surely, 2^111132312231 is an apocalyptic number.

111132312231 is a deficient number, since it is larger than the sum of its proper divisors (37044104081).

111132312231 is an equidigital number, since it uses as much as digits as its factorization.

111132312231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37044104080.

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

Adding to 111132312231 its reverse (132213231111), we get a palindrome (243345543342).

The spelling of 111132312231 in words is "one hundred eleven billion, one hundred thirty-two million, three hundred twelve thousand, two hundred thirty-one".