111409081 has 8 divisors (see below), whose sum is σ = 128297664. Its totient is φ = 94763760.

The previous prime is 111409061. The next prime is 111409091. The reversal of 111409081 is 180904111.

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

It is not a de Polignac number, because 111409081 - 2⁵ = 111409049 is a prime.

It is a super-2 number, since 2×111409081² = 24823966658529122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111409061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59830 + ... + 61663.

It is an arithmetic number, because the mean of its divisors is an integer number (16037208).

Almost surely, 2^111409081 is an apocalyptic number.

It is an amenable number.

111409081 is a deficient number, since it is larger than the sum of its proper divisors (16888583).

111409081 is a wasteful number, since it uses less digits than its factorization.

111409081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121631.

The product of its (nonzero) digits is 288, while the sum is 25.

The square root of 111409081 is about 10555.0500235669. The cubic root of 111409081 is about 481.1792201297.

The spelling of 111409081 in words is "one hundred eleven million, four hundred nine thousand, eighty-one".