23171315 has 4 divisors (see below), whose sum is σ = 27805584. Its totient is φ = 18537048.

The previous prime is 23171299. The next prime is 23171339. The reversal of 23171315 is 51317132.

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 23171315 - 2⁴ = 23171299 is a prime.

It is a super-3 number, since 3×23171315³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2317127 + ... + 2317136.

It is an arithmetic number, because the mean of its divisors is an integer number (6951396).

Almost surely, 2^23171315 is an apocalyptic number.

23171315 is a deficient number, since it is larger than the sum of its proper divisors (4634269).

23171315 is an equidigital number, since it uses as much as digits as its factorization.

23171315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4634268.

The product of its digits is 630, while the sum is 23.

The square root of 23171315 is about 4813.6592110369. The cubic root of 23171315 is about 285.0910348356.

Adding to 23171315 its reverse (51317132), we get a palindrome (74488447).

The spelling of 23171315 in words is "twenty-three million, one hundred seventy-one thousand, three hundred fifteen".