11317639 has 4 divisors (see below), whose sum is σ = 11327256. Its totient is φ = 11308024.

The previous prime is 11317577. The next prime is 11317651. The reversal of 11317639 is 93671311.

11317639 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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11317639 - 2²¹ = 9220487 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11317639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11317739) 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, 2749 + ... + 5494.

It is an arithmetic number, because the mean of its divisors is an integer number (2831814).

Almost surely, 2^11317639 is an apocalyptic number.

11317639 is a deficient number, since it is larger than the sum of its proper divisors (9617).

11317639 is an equidigital number, since it uses as much as digits as its factorization.

11317639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9616.

The product of its digits is 3402, while the sum is 31.

The square root of 11317639 is about 3364.1698827497. The cubic root of 11317639 is about 224.5184036579.

The spelling of 11317639 in words is "eleven million, three hundred seventeen thousand, six hundred thirty-nine".