11981363 has 2 divisors, whose sum is σ = 11981364. Its totient is φ = 11981362.

The previous prime is 11981357. The next prime is 11981393. The reversal of 11981363 is 36318911.

It is a weak prime.

It is an emirp because it is prime and its reverse (36318911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11981363 - 2¹² = 11977267 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (11981353) 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, 5990681 + 5990682.

It is an arithmetic number, because the mean of its divisors is an integer number (5990682).

Almost surely, 2^11981363 is an apocalyptic number.

11981363 is a deficient number, since it is larger than the sum of its proper divisors (1).

11981363 is an equidigital number, since it uses as much as digits as its factorization.

11981363 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 32.

The square root of 11981363 is about 3461.4105506282. The cubic root of 11981363 is about 228.8242646585.

The spelling of 11981363 in words is "eleven million, nine hundred eighty-one thousand, three hundred sixty-three".