111368381 has 4 divisors (see below), whose sum is σ = 115208700. Its totient is φ = 107528064.

The previous prime is 111368353. The next prime is 111368401. The reversal of 111368381 is 183863111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 65060356 + 46308025 = 8066^2 + 6805^2 .

It is a cyclic number.

It is not a de Polignac number, because 111368381 - 2²² = 107174077 is a prime.

It is a super-2 number, since 2×111368381² = 24805832573122322, 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 (111368351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1920116 + ... + 1920173.

It is an arithmetic number, because the mean of its divisors is an integer number (28802175).

Almost surely, 2^111368381 is an apocalyptic number.

It is an amenable number.

111368381 is a deficient number, since it is larger than the sum of its proper divisors (3840319).

111368381 is an equidigital number, since it uses as much as digits as its factorization.

111368381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3840318.

The product of its digits is 3456, while the sum is 32.

The square root of 111368381 is about 10553.1218603786. The cubic root of 111368381 is about 481.1206181457.

The spelling of 111368381 in words is "one hundred eleven million, three hundred sixty-eight thousand, three hundred eighty-one".