11641311 has 24 divisors (see below), whose sum is σ = 19425744. Its totient is φ = 6639360.

The previous prime is 11641249. The next prime is 11641313. The reversal of 11641311 is 11314611.

11641311 is a `hidden beast` number, since 11 + 641 + 3 + 11 = 666.

It is not a de Polignac number, because 11641311 - 2⁶ = 11641247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11641313) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1776 + ... + 5141.

It is an arithmetic number, because the mean of its divisors is an integer number (809406).

Almost surely, 2^11641311 is an apocalyptic number.

11641311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11641311 is a deficient number, since it is larger than the sum of its proper divisors (7784433).

11641311 is a wasteful number, since it uses less digits than its factorization.

11641311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6951 (or 6948 counting only the distinct ones).

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

The square root of 11641311 is about 3411.9365468895. The cubic root of 11641311 is about 226.6386444116.

Adding to 11641311 its reverse (11314611), we get a palindrome (22955922).

The spelling of 11641311 in words is "eleven million, six hundred forty-one thousand, three hundred eleven".