111216323 has 2 divisors, whose sum is σ = 111216324. Its totient is φ = 111216322.

The previous prime is 111216319. The next prime is 111216353. The reversal of 111216323 is 323612111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111216323 - 2² = 111216319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111216295 and 111216304.

It is not a weakly prime, because it can be changed into another prime (111216353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55608161 + 55608162.

It is an arithmetic number, because the mean of its divisors is an integer number (55608162).

Almost surely, 2^111216323 is an apocalyptic number.

111216323 is a deficient number, since it is larger than the sum of its proper divisors (1).

111216323 is an equidigital number, since it uses as much as digits as its factorization.

111216323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 20.

The square root of 111216323 is about 10545.9149911233. The cubic root of 111216323 is about 480.9015507007.

Adding to 111216323 its reverse (323612111), we get a palindrome (434828434).

The spelling of 111216323 in words is "one hundred eleven million, two hundred sixteen thousand, three hundred twenty-three".