23171613 has 4 divisors (see below), whose sum is σ = 30895488. Its totient is φ = 15447740.

The previous prime is 23171597. The next prime is 23171623. The reversal of 23171613 is 31617132.

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 23171613 - 2⁴ = 23171597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23171623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3861933 + ... + 3861938.

It is an arithmetic number, because the mean of its divisors is an integer number (7723872).

Almost surely, 2^23171613 is an apocalyptic number.

It is an amenable number.

23171613 is a deficient number, since it is larger than the sum of its proper divisors (7723875).

23171613 is an equidigital number, since it uses as much as digits as its factorization.

23171613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7723874.

The product of its digits is 756, while the sum is 24.

The square root of 23171613 is about 4813.6901645204. The cubic root of 23171613 is about 285.0922569899.

Adding to 23171613 its reverse (31617132), we get a palindrome (54788745).

The spelling of 23171613 in words is "twenty-three million, one hundred seventy-one thousand, six hundred thirteen".