23105405 has 8 divisors (see below), whose sum is σ = 28371552. Its totient is φ = 18054288.

The previous prime is 23105399. The next prime is 23105417. The reversal of 23105405 is 50450132.

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

It is a cyclic number.

It is not a de Polignac number, because 23105405 - 2¹⁰ = 23104381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53519 + ... + 53948.

It is an arithmetic number, because the mean of its divisors is an integer number (3546444).

Almost surely, 2^23105405 is an apocalyptic number.

It is an amenable number.

23105405 is a deficient number, since it is larger than the sum of its proper divisors (5266147).

23105405 is a wasteful number, since it uses less digits than its factorization.

23105405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107515.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 23105405 is about 4806.8081925536. The cubic root of 23105405 is about 284.8204676209.

Adding to 23105405 its reverse (50450132), we get a palindrome (73555537).

The spelling of 23105405 in words is "twenty-three million, one hundred five thousand, four hundred five".