111320123 has 2 divisors, whose sum is σ = 111320124. Its totient is φ = 111320122.

The previous prime is 111320093. The next prime is 111320129. The reversal of 111320123 is 321023111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111320123 - 2¹² = 111316027 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 111320098 and 111320107.

It is not a weakly prime, because it can be changed into another prime (111320129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55660061 + 55660062.

It is an arithmetic number, because the mean of its divisors is an integer number (55660062).

Almost surely, 2^111320123 is an apocalyptic number.

111320123 is a deficient number, since it is larger than the sum of its proper divisors (1).

111320123 is an equidigital number, since it uses as much as digits as its factorization.

111320123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 111320123 is about 10550.8351802120. The cubic root of 111320123 is about 481.0511152552.

Adding to 111320123 its reverse (321023111), we get a palindrome (432343234).

The spelling of 111320123 in words is "one hundred eleven million, three hundred twenty thousand, one hundred twenty-three".