11317643 has 4 divisors (see below), whose sum is σ = 11580888. Its totient is φ = 11054400.

The previous prime is 11317577. The next prime is 11317651. The reversal of 11317643 is 34671311.

11317643 is digitally balanced in base 2, because in such base 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 a cyclic number.

It is not a de Polignac number, because 11317643 - 2²² = 7123339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11317543) 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, 131558 + ... + 131643.

It is an arithmetic number, because the mean of its divisors is an integer number (2895222).

Almost surely, 2^11317643 is an apocalyptic number.

11317643 is a deficient number, since it is larger than the sum of its proper divisors (263245).

11317643 is an equidigital number, since it uses as much as digits as its factorization.

11317643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263244.

The product of its digits is 1512, while the sum is 26.

The square root of 11317643 is about 3364.1704772499. The cubic root of 11317643 is about 224.5184301085.

Adding to 11317643 its reverse (34671311), we get a palindrome (45988954).

The spelling of 11317643 in words is "eleven million, three hundred seventeen thousand, six hundred forty-three".