23130561 has 8 divisors (see below), whose sum is σ = 31263520. Its totient is φ = 15208992.

The previous prime is 23130553. The next prime is 23130623. The reversal of 23130561 is 16503132.

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

It is not a de Polignac number, because 23130561 - 2³ = 23130553 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23130521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52591 + ... + 53028.

It is an arithmetic number, because the mean of its divisors is an integer number (3907940).

Almost surely, 2^23130561 is an apocalyptic number.

It is an amenable number.

23130561 is a deficient number, since it is larger than the sum of its proper divisors (8132959).

23130561 is a wasteful number, since it uses less digits than its factorization.

23130561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105695.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 23130561 is about 4809.4241859083. The cubic root of 23130561 is about 284.9237961852.

Adding to 23130561 its reverse (16503132), we get a palindrome (39633693).

The spelling of 23130561 in words is "twenty-three million, one hundred thirty thousand, five hundred sixty-one".