111319681 has 8 divisors (see below), whose sum is σ = 121516128. Its totient is φ = 101136000.

The previous prime is 111319673. The next prime is 111319699. The reversal of 111319681 is 186913111.

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 111319681 - 2³ = 111319673 is a prime.

It is a super-2 number, since 2×111319681² = 24784142755883522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111319631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31441 + ... + 34801.

It is an arithmetic number, because the mean of its divisors is an integer number (15189516).

Almost surely, 2^111319681 is an apocalyptic number.

111319681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111319681 is a deficient number, since it is larger than the sum of its proper divisors (10196447).

111319681 is a wasteful number, since it uses less digits than its factorization.

111319681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6383.

The product of its digits is 1296, while the sum is 31.

The square root of 111319681 is about 10550.8142339821. The cubic root of 111319681 is about 481.0504785782.

The spelling of 111319681 in words is "one hundred eleven million, three hundred nineteen thousand, six hundred eighty-one".