111434081 has 8 divisors (see below), whose sum is σ = 121824000. Its totient is φ = 101087440.

The previous prime is 111434077. The next prime is 111434083. The reversal of 111434081 is 180434111.

It is a happy number.

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 111434081 - 2² = 111434077 is a prime.

It is a super-2 number, since 2×111434081² = 24835108816629122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111434083) 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, 5306 + ... + 15843.

It is an arithmetic number, because the mean of its divisors is an integer number (15228000).

Almost surely, 2^111434081 is an apocalyptic number.

111434081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111434081 is a deficient number, since it is larger than the sum of its proper divisors (10389919).

111434081 is a wasteful number, since it uses less digits than its factorization.

111434081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21639.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 111434081 is about 10556.2342243813. The cubic root of 111434081 is about 481.2152093588.

Adding to 111434081 its reverse (180434111), we get a palindrome (291868192).

The spelling of 111434081 in words is "one hundred eleven million, four hundred thirty-four thousand, eighty-one".