111687243 has 8 divisors (see below), whose sum is σ = 149777808. Its totient is φ = 74027424.

The previous prime is 111687227. The next prime is 111687259. The reversal of 111687243 is 342786111.

It is an interprime number because it is at equal distance from previous prime (111687227) and next prime (111687259).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111687243 - 2⁴ = 111687227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111687293) 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 7 ways as a sum of consecutive naturals, for example, 107080 + ... + 108117.

It is an arithmetic number, because the mean of its divisors is an integer number (18722226).

Almost surely, 2^111687243 is an apocalyptic number.

111687243 is a deficient number, since it is larger than the sum of its proper divisors (38090565).

111687243 is a wasteful number, since it uses less digits than its factorization.

111687243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215373.

The product of its digits is 8064, while the sum is 33.

The square root of 111687243 is about 10568.2185348336. The cubic root of 111687243 is about 481.5793506923.

The spelling of 111687243 in words is "one hundred eleven million, six hundred eighty-seven thousand, two hundred forty-three".