23305147 has 4 divisors (see below), whose sum is σ = 24676056. Its totient is φ = 21934240.

The previous prime is 23305133. The next prime is 23305151. The reversal of 23305147 is 74150332.

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 23305147 - 2¹⁹ = 22780859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23305127) 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, 685429 + ... + 685462.

It is an arithmetic number, because the mean of its divisors is an integer number (6169014).

Almost surely, 2^23305147 is an apocalyptic number.

23305147 is a deficient number, since it is larger than the sum of its proper divisors (1370909).

23305147 is a wasteful number, since it uses less digits than its factorization.

23305147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1370908.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 23305147 is about 4827.5404710888. The cubic root of 23305147 is about 285.6388541466.

Adding to 23305147 its reverse (74150332), we get a palindrome (97455479).

The spelling of 23305147 in words is "twenty-three million, three hundred five thousand, one hundred forty-seven".