23117311 has 4 divisors (see below), whose sum is σ = 26419792. Its totient is φ = 19814832.

The previous prime is 23117293. The next prime is 23117327. The reversal of 23117311 is 11371132.

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 23117311 - 2¹¹ = 23115263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23117111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1651230 + ... + 1651243.

It is an arithmetic number, because the mean of its divisors is an integer number (6604948).

Almost surely, 2^23117311 is an apocalyptic number.

23117311 is a deficient number, since it is larger than the sum of its proper divisors (3302481).

23117311 is an equidigital number, since it uses as much as digits as its factorization.

23117311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3302480.

The product of its digits is 126, while the sum is 19.

The square root of 23117311 is about 4808.0464848002. The cubic root of 23117311 is about 284.8693809984.

Adding to 23117311 its reverse (11371132), we get a palindrome (34488443).

The spelling of 23117311 in words is "twenty-three million, one hundred seventeen thousand, three hundred eleven".