23161317 has 4 divisors (see below), whose sum is σ = 30881760. Its totient is φ = 15440876.

The previous prime is 23161283. The next prime is 23161319. The reversal of 23161317 is 71316132.

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 23161317 - 2¹⁵ = 23128549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23161319) 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 3 ways as a sum of consecutive naturals, for example, 3860217 + ... + 3860222.

It is an arithmetic number, because the mean of its divisors is an integer number (7720440).

Almost surely, 2^23161317 is an apocalyptic number.

It is an amenable number.

23161317 is a deficient number, since it is larger than the sum of its proper divisors (7720443).

23161317 is an equidigital number, since it uses as much as digits as its factorization.

23161317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7720442.

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

The square root of 23161317 is about 4812.6205958916. The cubic root of 23161317 is about 285.0500250753.

Adding to 23161317 its reverse (71316132), we get a palindrome (94477449).

The spelling of 23161317 in words is "twenty-three million, one hundred sixty-one thousand, three hundred seventeen".