111423243 has 16 divisors (see below), whose sum is σ = 153626400. Its totient is φ = 71778816.

The previous prime is 111423241. The next prime is 111423251. The reversal of 111423243 is 342324111.

It is not a de Polignac number, because 111423243 - 2¹ = 111423241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111423241) 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 in 15 ways as a sum of consecutive naturals, for example, 13171 + ... + 19907.

It is an arithmetic number, because the mean of its divisors is an integer number (9601650).

Almost surely, 2^111423243 is an apocalyptic number.

111423243 is a deficient number, since it is larger than the sum of its proper divisors (42203157).

111423243 is a wasteful number, since it uses less digits than its factorization.

111423243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6926.

The product of its digits is 576, while the sum is 21.

The square root of 111423243 is about 10555.7208659570. The cubic root of 111423243 is about 481.1996079692.

Adding to 111423243 its reverse (342324111), we get a palindrome (453747354).

The spelling of 111423243 in words is "one hundred eleven million, four hundred twenty-three thousand, two hundred forty-three".