11641143 has 4 divisors (see below), whose sum is σ = 15521528. Its totient is φ = 7760760.

The previous prime is 11641139. The next prime is 11641153. The reversal of 11641143 is 34114611.

11641143 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 11641143 - 2² = 11641139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11641103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1940188 + ... + 1940193.

It is an arithmetic number, because the mean of its divisors is an integer number (3880382).

Almost surely, 2^11641143 is an apocalyptic number.

11641143 is a deficient number, since it is larger than the sum of its proper divisors (3880385).

11641143 is an equidigital number, since it uses as much as digits as its factorization.

11641143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3880384.

The product of its digits is 288, while the sum is 21.

The square root of 11641143 is about 3411.9119273510. The cubic root of 11641143 is about 226.6375541714.

Adding to 11641143 its reverse (34114611), we get a palindrome (45755754).

The spelling of 11641143 in words is "eleven million, six hundred forty-one thousand, one hundred forty-three".