111433161 has 8 divisors (see below), whose sum is σ = 169802944. Its totient is φ = 63676080.

The previous prime is 111433141. The next prime is 111433163. The reversal of 111433161 is 161334111.

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

It is not a de Polignac number, because 111433161 - 2⁵ = 111433129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 5306341 = 111433161 / (1 + 1 + 1 + 4 + 3 + 3 + 1 + 6 + 1).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (111433163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2653150 + ... + 2653191.

It is an arithmetic number, because the mean of its divisors is an integer number (21225368).

Almost surely, 2^111433161 is an apocalyptic number.

It is an amenable number.

111433161 is a deficient number, since it is larger than the sum of its proper divisors (58369783).

111433161 is an equidigital number, since it uses as much as digits as its factorization.

111433161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5306351.

The product of its digits is 216, while the sum is 21.

The square root of 111433161 is about 10556.1906481458. The cubic root of 111433161 is about 481.2138850506.

Adding to 111433161 its reverse (161334111), we get a palindrome (272767272).

The spelling of 111433161 in words is "one hundred eleven million, four hundred thirty-three thousand, one hundred sixty-one".