11284981 has 2 divisors, whose sum is σ = 11284982. Its totient is φ = 11284980.

The previous prime is 11284967. The next prime is 11285009. The reversal of 11284981 is 18948211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10182481 + 1102500 = 3191^2 + 1050^2 .

It is an emirp because it is prime and its reverse (18948211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11284981 - 2¹¹ = 11282933 is a prime.

It is a super-2 number, since 2×11284981² = 254701592340722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11284921) 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 as a sum of consecutive naturals, namely, 5642490 + 5642491.

It is an arithmetic number, because the mean of its divisors is an integer number (5642491).

Almost surely, 2^11284981 is an apocalyptic number.

11284981 is the 1940-th hex number.

It is an amenable number.

11284981 is a deficient number, since it is larger than the sum of its proper divisors (1).

11284981 is an equidigital number, since it uses as much as digits as its factorization.

11284981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 34.

The square root of 11284981 is about 3359.3125784898. The cubic root of 11284981 is about 224.3022400207.

The spelling of 11284981 in words is "eleven million, two hundred eighty-four thousand, nine hundred eighty-one".