11384381 has 2 divisors, whose sum is σ = 11384382. Its totient is φ = 11384380.

The previous prime is 11384377. The next prime is 11384383. The reversal of 11384381 is 18348311.

11384381 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8265625 + 3118756 = 2875^2 + 1766^2 .

It is a cyclic number.

It is not a de Polignac number, because 11384381 - 2² = 11384377 is a prime.

It is a super-2 number, since 2×11384381² = 259208261506322, which contains 22 as substring.

Together with 11384383, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11384383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5692190 + 5692191.

It is an arithmetic number, because the mean of its divisors is an integer number (5692191).

Almost surely, 2^11384381 is an apocalyptic number.

It is an amenable number.

11384381 is a deficient number, since it is larger than the sum of its proper divisors (1).

11384381 is an equidigital number, since it uses as much as digits as its factorization.

11384381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 29.

The square root of 11384381 is about 3374.0748361588. The cubic root of 11384381 is about 224.9588797282.

The spelling of 11384381 in words is "eleven million, three hundred eighty-four thousand, three hundred eighty-one".