111648239 has 8 divisors (see below), whose sum is σ = 113662368. Its totient is φ = 109640160.

The previous prime is 111648227. The next prime is 111648259. The reversal of 111648239 is 932846111.

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

It is a cyclic number.

It is not a de Polignac number, because 111648239 - 2⁴ = 111648223 is a prime.

It is a super-2 number, since 2×111648239² = 24930658543602242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111648199 and 111648208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111648259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52454 + ... + 54540.

It is an arithmetic number, because the mean of its divisors is an integer number (14207796).

Almost surely, 2^111648239 is an apocalyptic number.

111648239 is a deficient number, since it is larger than the sum of its proper divisors (2014129).

111648239 is an equidigital number, since it uses as much as digits as its factorization.

111648239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3025.

The product of its digits is 10368, while the sum is 35.

The square root of 111648239 is about 10566.3730295689. The cubic root of 111648239 is about 481.5232842832.

The spelling of 111648239 in words is "one hundred eleven million, six hundred forty-eight thousand, two hundred thirty-nine".