23161313 has 4 divisors (see below), whose sum is σ = 26470080. Its totient is φ = 19852548.

The previous prime is 23161283. The next prime is 23161319. The reversal of 23161313 is 31316132.

It is a happy number.

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 23161313 - 2⁶ = 23161249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23161319) 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, 1654373 + ... + 1654386.

It is an arithmetic number, because the mean of its divisors is an integer number (6617520).

Almost surely, 2^23161313 is an apocalyptic number.

It is an amenable number.

23161313 is a deficient number, since it is larger than the sum of its proper divisors (3308767).

23161313 is an equidigital number, since it uses as much as digits as its factorization.

23161313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3308766.

The product of its digits is 324, while the sum is 20.

The square root of 23161313 is about 4812.6201803176. The cubic root of 23161313 is about 285.0500086658.

Adding to 23161313 its reverse (31316132), we get a palindrome (54477445).

The spelling of 23161313 in words is "twenty-three million, one hundred sixty-one thousand, three hundred thirteen".