111983511 has 8 divisors (see below), whose sum is σ = 157169920. Its totient is φ = 70726392.

The previous prime is 111983507. The next prime is 111983537. The reversal of 111983511 is 115389111.

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

It is not a de Polignac number, because 111983511 - 2² = 111983507 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111983551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 982255 + ... + 982368.

It is an arithmetic number, because the mean of its divisors is an integer number (19646240).

Almost surely, 2^111983511 is an apocalyptic number.

111983511 is a deficient number, since it is larger than the sum of its proper divisors (45186409).

111983511 is a wasteful number, since it uses less digits than its factorization.

111983511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1964645.

The product of its digits is 1080, while the sum is 30.

The square root of 111983511 is about 10582.2261835589. The cubic root of 111983511 is about 482.0047964147.

The spelling of 111983511 in words is "one hundred eleven million, nine hundred eighty-three thousand, five hundred eleven".