111481 has 8 divisors (see below), whose sum is σ = 120384. Its totient is φ = 102960.

The previous prime is 111467. The next prime is 111487. The reversal of 111481 is 184111.

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 111481 - 2⁹ = 110969 is a prime.

It is a super-2 number, since 2×111481² = 24856026722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111487) 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, 786 + ... + 916.

It is an arithmetic number, because the mean of its divisors is an integer number (15048).

2¹¹¹⁴⁸¹ is an apocalyptic number.

It is an amenable number.

111481 is a deficient number, since it is larger than the sum of its proper divisors (8903).

111481 is a wasteful number, since it uses less digits than its factorization.

111481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191.

The product of its digits is 32, while the sum is 16.

The square root of 111481 is about 333.8877056736. The cubic root of 111481 is about 48.1282737976.

Adding to 111481 its reverse (184111), we get a palindrome (295592).

The spelling of 111481 in words is "one hundred eleven thousand, four hundred eighty-one".