11207381 has 2 divisors, whose sum is σ = 11207382. Its totient is φ = 11207380.

The previous prime is 11207363. The next prime is 11207387. The reversal of 11207381 is 18370211.

It is a happy number.

11207381 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., 9205156 + 2002225 = 3034^2 + 1415^2 .

It is a cyclic number.

It is not a de Polignac number, because 11207381 - 2¹⁴ = 11190997 is a prime.

It is a super-2 number, since 2×11207381² = 251210777758322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11207387) 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 as a sum of consecutive naturals, namely, 5603690 + 5603691.

It is an arithmetic number, because the mean of its divisors is an integer number (5603691).

Almost surely, 2^11207381 is an apocalyptic number.

It is an amenable number.

11207381 is a deficient number, since it is larger than the sum of its proper divisors (1).

11207381 is an equidigital number, since it uses as much as digits as its factorization.

11207381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 11207381 is about 3347.7426723092. The cubic root of 11207381 is about 223.7869266895.

Adding to 11207381 its reverse (18370211), we get a palindrome (29577592).

The spelling of 11207381 in words is "eleven million, two hundred seven thousand, three hundred eighty-one".