11236381 has 8 divisors (see below), whose sum is σ = 12209400. Its totient is φ = 10278912.

The previous prime is 11236349. The next prime is 11236403. The reversal of 11236381 is 18363211.

11236381 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1836025 + 9400356 = 1355^2 + 3066^2 .

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 11236381 - 2⁵ = 11236349 is a prime.

It is a super-2 number, since 2×11236381² = 252512515954322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11236321) 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, 2356 + ... + 5293.

It is an arithmetic number, because the mean of its divisors is an integer number (1526175).

Almost surely, 2^11236381 is an apocalyptic number.

It is an amenable number.

11236381 is a deficient number, since it is larger than the sum of its proper divisors (973019).

11236381 is a wasteful number, since it uses less digits than its factorization.

11236381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7775.

The product of its digits is 864, while the sum is 25.

The square root of 11236381 is about 3352.0711507962. The cubic root of 11236381 is about 223.9797826672.

Adding to 11236381 its reverse (18363211), we get a palindrome (29599592).

The spelling of 11236381 in words is "eleven million, two hundred thirty-six thousand, three hundred eighty-one".