11043681 has 16 divisors (see below), whose sum is σ = 16124160. Its totient is φ = 6667920.

The previous prime is 11043673. The next prime is 11043691. The reversal of 11043681 is 18634011.

It is not a de Polignac number, because 11043681 - 2³ = 11043673 is a prime.

It is a super-2 number, since 2×11043681² = 243925780059522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11043631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12066 + ... + 12948.

It is an arithmetic number, because the mean of its divisors is an integer number (1007760).

Almost surely, 2^11043681 is an apocalyptic number.

11043681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11043681 is a deficient number, since it is larger than the sum of its proper divisors (5080479).

11043681 is a wasteful number, since it uses less digits than its factorization.

11043681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 11043681 is about 3323.2034244084. The cubic root of 11043681 is about 222.6920010835.

Adding to 11043681 its reverse (18634011), we get a palindrome (29677692).

The spelling of 11043681 in words is "eleven million, forty-three thousand, six hundred eighty-one".