11641131 has 8 divisors (see below), whose sum is σ = 17246160. Its totient is φ = 7760736.

The previous prime is 11641121. The next prime is 11641139. The reversal of 11641131 is 13114611.

11641131 is a `hidden beast` number, since 11 + 641 + 13 + 1 = 666.

It is not a de Polignac number, because 11641131 - 2⁵ = 11641099 is a prime.

It is a super-2 number, since 2×11641131² = 271031861918322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11641139) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 215550 + ... + 215603.

It is an arithmetic number, because the mean of its divisors is an integer number (2155770).

Almost surely, 2^11641131 is an apocalyptic number.

11641131 is a deficient number, since it is larger than the sum of its proper divisors (5605029).

11641131 is an equidigital number, since it uses as much as digits as its factorization.

11641131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431162 (or 431156 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

The square root of 11641131 is about 3411.9101688057. The cubic root of 11641131 is about 226.6374762967.

Adding to 11641131 its reverse (13114611), we get a palindrome (24755742).

The spelling of 11641131 in words is "eleven million, six hundred forty-one thousand, one hundred thirty-one".