23136905 has 8 divisors (see below), whose sum is σ = 30288384. Its totient is φ = 16826800.

The previous prime is 23136901. The next prime is 23136913. The reversal of 23136905 is 50963132.

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

It is not a de Polignac number, because 23136905 - 2² = 23136901 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23136901) 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, 210281 + ... + 210390.

It is an arithmetic number, because the mean of its divisors is an integer number (3786048).

Almost surely, 2^23136905 is an apocalyptic number.

It is an amenable number.

23136905 is a deficient number, since it is larger than the sum of its proper divisors (7151479).

23136905 is a wasteful number, since it uses less digits than its factorization.

23136905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420687.

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 23136905 is about 4810.0836791058. The cubic root of 23136905 is about 284.9498424095.

The spelling of 23136905 in words is "twenty-three million, one hundred thirty-six thousand, nine hundred five".