111413123 has 4 divisors (see below), whose sum is σ = 111485088. Its totient is φ = 111341160.

The previous prime is 111413119. The next prime is 111413149. The reversal of 111413123 is 321314111.

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

It is a cyclic number.

It is not a de Polignac number, because 111413123 - 2² = 111413119 is a prime.

It is a super-2 number, since 2×111413123² = 24825767953226258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111413723) 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 3 ways as a sum of consecutive naturals, for example, 33608 + ... + 36773.

It is an arithmetic number, because the mean of its divisors is an integer number (27871272).

Almost surely, 2^111413123 is an apocalyptic number.

111413123 is a deficient number, since it is larger than the sum of its proper divisors (71965).

111413123 is an equidigital number, since it uses as much as digits as its factorization.

111413123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71964.

The product of its digits is 72, while the sum is 17.

The square root of 111413123 is about 10555.2414941582. The cubic root of 111413123 is about 481.1850392331.

Adding to 111413123 its reverse (321314111), we get a palindrome (432727234).

The spelling of 111413123 in words is "one hundred eleven million, four hundred thirteen thousand, one hundred twenty-three".