111023109 has 8 divisors (see below), whose sum is σ = 164478720. Its totient is φ = 74015388.

The previous prime is 111023069. The next prime is 111023117. The reversal of 111023109 is 901320111.

It is not a de Polignac number, because 111023109 - 2⁷ = 111022981 is a prime.

It is a super-2 number, since 2×111023109² = 24652261464051762, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111023091 and 111023100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111023509) 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 in 7 ways as a sum of consecutive naturals, for example, 2055957 + ... + 2056010.

It is an arithmetic number, because the mean of its divisors is an integer number (20559840).

Almost surely, 2^111023109 is an apocalyptic number.

It is an amenable number.

111023109 is a deficient number, since it is larger than the sum of its proper divisors (53455611).

111023109 is an equidigital number, since it uses as much as digits as its factorization.

111023109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4111976 (or 4111970 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

The square root of 111023109 is about 10536.7504003844. The cubic root of 111023109 is about 480.6229022395.

The spelling of 111023109 in words is "one hundred eleven million, twenty-three thousand, one hundred nine".