23423517 has 12 divisors (see below), whose sum is σ = 36436764. Its totient is φ = 14414400.

The previous prime is 23423489. The next prime is 23423527. The reversal of 23423517 is 71532432.

It can be written as a sum of positive squares in 2 ways, for example, as 2134521 + 21288996 = 1461^2 + 4614^2 .

It is not a de Polignac number, because 23423517 - 2¹¹ = 23421469 is a prime.

It is a super-2 number, since 2×23423517² = 1097322297298578, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23423527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99984 + ... + 100217.

It is an arithmetic number, because the mean of its divisors is an integer number (3036397).

Almost surely, 2^23423517 is an apocalyptic number.

It is an amenable number.

23423517 is a deficient number, since it is larger than the sum of its proper divisors (13013247).

23423517 is a wasteful number, since it uses less digits than its factorization.

23423517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200220 (or 200217 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 23423517 is about 4839.7848092658. The cubic root of 23423517 is about 286.1216371769.

Adding to 23423517 its reverse (71532432), we get a palindrome (94955949).

The spelling of 23423517 in words is "twenty-three million, four hundred twenty-three thousand, five hundred seventeen".