11943081 has 6 divisors (see below), whose sum is σ = 17251130. Its totient is φ = 7962048.

The previous prime is 11943067. The next prime is 11943097. The reversal of 11943081 is 18034911.

It can be written as a sum of positive squares in only one way, i.e., 6579225 + 5363856 = 2565^2 + 2316^2 .

It is not a de Polignac number, because 11943081 - 2⁶ = 11943017 is a prime.

It is a super-2 number, since 2×11943081² = 285274367545122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11943011) 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 in 5 ways as a sum of consecutive naturals, for example, 663496 + ... + 663513.

Almost surely, 2^11943081 is an apocalyptic number.

It is an amenable number.

11943081 is a deficient number, since it is larger than the sum of its proper divisors (5308049).

11943081 is a wasteful number, since it uses less digits than its factorization.

11943081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1327015 (or 1327012 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 11943081 is about 3455.8762998695. The cubic root of 11943081 is about 228.5802969587.

Adding to 11943081 its reverse (18034911), we get a palindrome (29977992).

The spelling of 11943081 in words is "eleven million, nine hundred forty-three thousand, eighty-one".