23105643 has 8 divisors (see below), whose sum is σ = 33608256. Its totient is φ = 14003400.

The previous prime is 23105629. The next prime is 23105651. The reversal of 23105643 is 34650132.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23105643 - 2⁴ = 23105627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23105603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350053 + ... + 350118.

It is an arithmetic number, because the mean of its divisors is an integer number (4201032).

Almost surely, 2^23105643 is an apocalyptic number.

23105643 is a deficient number, since it is larger than the sum of its proper divisors (10502613).

23105643 is a wasteful number, since it uses less digits than its factorization.

23105643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700185.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 23105643 is about 4806.8329490424. The cubic root of 23105643 is about 284.8214455601.

Adding to 23105643 its reverse (34650132), we get a palindrome (57755775).

The spelling of 23105643 in words is "twenty-three million, one hundred five thousand, six hundred forty-three".