23440317 has 4 divisors (see below), whose sum is σ = 31253760. Its totient is φ = 15626876.

The previous prime is 23440283. The next prime is 23440321. The reversal of 23440317 is 71304432.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23440317 - 2⁶ = 23440253 is a prime.

It is a super-2 number, since 2×23440317² = 1098896922120978, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23440217) 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, 3906717 + ... + 3906722.

It is an arithmetic number, because the mean of its divisors is an integer number (7813440).

Almost surely, 2^23440317 is an apocalyptic number.

It is an amenable number.

23440317 is a deficient number, since it is larger than the sum of its proper divisors (7813443).

23440317 is an equidigital number, since it uses as much as digits as its factorization.

23440317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7813442.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 23440317 is about 4841.5201125266. The cubic root of 23440317 is about 286.1900256369.

Adding to 23440317 its reverse (71304432), we get a palindrome (94744749).

The spelling of 23440317 in words is "twenty-three million, four hundred forty thousand, three hundred seventeen".