11317823 has 4 divisors (see below), whose sum is σ = 12346728. Its totient is φ = 10288920.

The previous prime is 11317811. The next prime is 11317849. The reversal of 11317823 is 32871311.

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 11317823 - 2⁴ = 11317807 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11317792 and 11317801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11317853) 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, 514436 + ... + 514457.

It is an arithmetic number, because the mean of its divisors is an integer number (3086682).

Almost surely, 2^11317823 is an apocalyptic number.

11317823 is a deficient number, since it is larger than the sum of its proper divisors (1028905).

11317823 is a wasteful number, since it uses less digits than its factorization.

11317823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028904.

The product of its digits is 1008, while the sum is 26.

The square root of 11317823 is about 3364.1972296523. The cubic root of 11317823 is about 224.5196203770.

The spelling of 11317823 in words is "eleven million, three hundred seventeen thousand, eight hundred twenty-three".