23305047 has 4 divisors (see below), whose sum is σ = 31073400. Its totient is φ = 15536696.

The previous prime is 23305033. The next prime is 23305057. The reversal of 23305047 is 74050332.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23305047 - 2⁸ = 23304791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23305027) 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, 3884172 + ... + 3884177.

It is an arithmetic number, because the mean of its divisors is an integer number (7768350).

Almost surely, 2^23305047 is an apocalyptic number.

23305047 is a deficient number, since it is larger than the sum of its proper divisors (7768353).

23305047 is an equidigital number, since it uses as much as digits as its factorization.

23305047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7768352.

The product of its (nonzero) digits is 2520, while the sum is 24.

The square root of 23305047 is about 4827.5301138367. The cubic root of 23305047 is about 285.6384455969.

Adding to 23305047 its reverse (74050332), we get a palindrome (97355379).

The spelling of 23305047 in words is "twenty-three million, three hundred five thousand, forty-seven".