111023381 has 8 divisors (see below), whose sum is σ = 127337664. Its totient is φ = 94822560.

The previous prime is 111023357. The next prime is 111023383. The reversal of 111023381 is 183320111.

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

It is not a de Polignac number, because 111023381 - 2²⁶ = 43914517 is a prime.

It is a super-2 number, since 2×111023381² = 24652382257342322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111023383) 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, 26255 + ... + 30188.

It is an arithmetic number, because the mean of its divisors is an integer number (15917208).

Almost surely, 2^111023381 is an apocalyptic number.

It is an amenable number.

111023381 is a deficient number, since it is larger than the sum of its proper divisors (16314283).

111023381 is an equidigital number, since it uses as much as digits as its factorization.

111023381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56731.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 111023381 is about 10536.7633075817. The cubic root of 111023381 is about 480.6232947383.

Adding to 111023381 its reverse (183320111), we get a palindrome (294343492).

The spelling of 111023381 in words is "one hundred eleven million, twenty-three thousand, three hundred eighty-one".