111009923 has 2 divisors, whose sum is σ = 111009924. Its totient is φ = 111009922.

The previous prime is 111009907. The next prime is 111009929. The reversal of 111009923 is 329900111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111009923 - 2⁴ = 111009907 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111009892 and 111009901.

It is not a weakly prime, because it can be changed into another prime (111009929) 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 as a sum of consecutive naturals, namely, 55504961 + 55504962.

It is an arithmetic number, because the mean of its divisors is an integer number (55504962).

Almost surely, 2^111009923 is an apocalyptic number.

111009923 is a deficient number, since it is larger than the sum of its proper divisors (1).

111009923 is an equidigital number, since it uses as much as digits as its factorization.

111009923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 111009923 is about 10536.1246670681. The cubic root of 111009923 is about 480.6038739352.

The spelling of 111009923 in words is "one hundred eleven million, nine thousand, nine hundred twenty-three".