11267381 has 2 divisors, whose sum is σ = 11267382. Its totient is φ = 11267380.

The previous prime is 11267369. The next prime is 11267383. The reversal of 11267381 is 18376211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10666756 + 600625 = 3266^2 + 775^2 .

It is a cyclic number.

It is not a de Polignac number, because 11267381 - 2¹⁰ = 11266357 is a prime.

It is a super-2 number, since 2×11267381² = 253907749198322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 11267383, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11267383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5633690 + 5633691.

It is an arithmetic number, because the mean of its divisors is an integer number (5633691).

Almost surely, 2^11267381 is an apocalyptic number.

It is an amenable number.

11267381 is a deficient number, since it is larger than the sum of its proper divisors (1).

11267381 is an equidigital number, since it uses as much as digits as its factorization.

11267381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 29.

The square root of 11267381 is about 3356.6919727613. The cubic root of 11267381 is about 224.1855724639.

The spelling of 11267381 in words is "eleven million, two hundred sixty-seven thousand, three hundred eighty-one".