11665331 has 8 divisors (see below), whose sum is σ = 12140544. Its totient is φ = 11196360.

The previous prime is 11665309. The next prime is 11665333. The reversal of 11665331 is 13356611.

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

It is a cyclic number.

It is not a de Polignac number, because 11665331 - 2⁶ = 11665267 is a prime.

It is a super-2 number, since 2×11665331² = 272159894679122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11665331.

It is not an unprimeable number, because it can be changed into a prime (11665333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2456 + ... + 5418.

It is an arithmetic number, because the mean of its divisors is an integer number (1517568).

Almost surely, 2^11665331 is an apocalyptic number.

11665331 is a deficient number, since it is larger than the sum of its proper divisors (475213).

11665331 is a wasteful number, since it uses less digits than its factorization.

11665331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3121.

The product of its digits is 1620, while the sum is 26.

The square root of 11665331 is about 3415.4547281438. The cubic root of 11665331 is about 226.7944149643.

The spelling of 11665331 in words is "eleven million, six hundred sixty-five thousand, three hundred thirty-one".