111582243 has 12 divisors (see below), whose sum is σ = 161456568. Its totient is φ = 74257920.

The previous prime is 111582239. The next prime is 111582259. The reversal of 111582243 is 342285111.

It is not a de Polignac number, because 111582243 - 2² = 111582239 is a prime.

It is a super-2 number, since 2×111582243² = 24901193905822098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111582143) 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 11 ways as a sum of consecutive naturals, for example, 5278 + ... + 15843.

It is an arithmetic number, because the mean of its divisors is an integer number (13454714).

Almost surely, 2^111582243 is an apocalyptic number.

111582243 is a deficient number, since it is larger than the sum of its proper divisors (49874325).

111582243 is a wasteful number, since it uses less digits than its factorization.

111582243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21714 (or 21711 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 111582243 is about 10563.2496420372. The cubic root of 111582243 is about 481.4283884015.

The spelling of 111582243 in words is "one hundred eleven million, five hundred eighty-two thousand, two hundred forty-three".