11831065 has 16 divisors (see below), whose sum is σ = 15135120. Its totient is φ = 8847360.

The previous prime is 11831033. The next prime is 11831077. The reversal of 11831065 is 56013811.

It can be written as a sum of positive squares in 8 ways, for example, as 1157776 + 10673289 = 1076^2 + 3267^2 .

It is not a de Polignac number, because 11831065 - 2⁵ = 11831033 is a prime.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 15001 + ... + 15769.

It is an arithmetic number, because the mean of its divisors is an integer number (945945).

Almost surely, 2^11831065 is an apocalyptic number.

It is an amenable number.

11831065 is a deficient number, since it is larger than the sum of its proper divisors (3304055).

11831065 is a wasteful number, since it uses less digits than its factorization.

11831065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 11831065 is about 3439.6315209627. The cubic root of 11831065 is about 227.8634210741.

Adding to 11831065 its reverse (56013811), we get a palindrome (67844876).

The spelling of 11831065 in words is "eleven million, eight hundred thirty-one thousand, sixty-five".