11338981 has 2 divisors, whose sum is σ = 11338982. Its totient is φ = 11338980.

The previous prime is 11338973. The next prime is 11339047. The reversal of 11338981 is 18983311.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11329956 + 9025 = 3366^2 + 95^2 .

It is a cyclic number.

It is not a de Polignac number, because 11338981 - 2³ = 11338973 is a prime.

It is a super-2 number, since 2×11338981² = 257144980236722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11335981) 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, 5669490 + 5669491.

It is an arithmetic number, because the mean of its divisors is an integer number (5669491).

Almost surely, 2^11338981 is an apocalyptic number.

It is an amenable number.

11338981 is a deficient number, since it is larger than the sum of its proper divisors (1).

11338981 is an equidigital number, since it uses as much as digits as its factorization.

11338981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 34.

The square root of 11338981 is about 3367.3403451389. The cubic root of 11338981 is about 224.6594419961.

The spelling of 11338981 in words is "eleven million, three hundred thirty-eight thousand, nine hundred eighty-one".