11136881 has 8 divisors (see below), whose sum is σ = 12847680. Its totient is φ = 9456048.

The previous prime is 11136877. The next prime is 11136883. The reversal of 11136881 is 18863111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11136881 - 2² = 11136877 is a prime.

It is a super-2 number, since 2×11136881² = 248060236816322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11136883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6686 + ... + 8183.

It is an arithmetic number, because the mean of its divisors is an integer number (1605960).

Almost surely, 2^11136881 is an apocalyptic number.

It is an amenable number.

11136881 is a deficient number, since it is larger than the sum of its proper divisors (1710799).

11136881 is a wasteful number, since it uses less digits than its factorization.

11136881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14983.

The product of its digits is 1152, while the sum is 29.

The square root of 11136881 is about 3337.1965779678. The cubic root of 11136881 is about 223.3166956245.

Adding to 11136881 its reverse (18863111), we get a palindrome (29999992).

The spelling of 11136881 in words is "eleven million, one hundred thirty-six thousand, eight hundred eighty-one".