11063981 has 2 divisors, whose sum is σ = 11063982. Its totient is φ = 11063980.

The previous prime is 11063977. The next prime is 11064007. The reversal of 11063981 is 18936011.

It is a happy number.

11063981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5929225 + 5134756 = 2435^2 + 2266^2 .

It is a cyclic number.

It is not a de Polignac number, because 11063981 - 2² = 11063977 is a prime.

It is a super-2 number, since 2×11063981² = 244823351136722, which contains 22 as substring.

It is equal to p₇₃₀₄₆₉ and since 11063981 and 730469 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11063971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5531990 + 5531991.

It is an arithmetic number, because the mean of its divisors is an integer number (5531991).

Almost surely, 2^11063981 is an apocalyptic number.

It is an amenable number.

11063981 is a deficient number, since it is larger than the sum of its proper divisors (1).

11063981 is an equidigital number, since it uses as much as digits as its factorization.

11063981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 11063981 is about 3326.2563040151. The cubic root of 11063981 is about 222.8283650538.

Adding to 11063981 its reverse (18936011), we get a palindrome (29999992).

The spelling of 11063981 in words is "eleven million, sixty-three thousand, nine hundred eighty-one".