23121065 has 8 divisors (see below), whose sum is σ = 30267648. Its totient is φ = 16815280.

The previous prime is 23121053. The next prime is 23121073. The reversal of 23121065 is 56012132.

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

It is not a de Polignac number, because 23121065 - 2⁸ = 23120809 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 210137 + ... + 210246.

It is an arithmetic number, because the mean of its divisors is an integer number (3783456).

Almost surely, 2^23121065 is an apocalyptic number.

It is an amenable number.

23121065 is a deficient number, since it is larger than the sum of its proper divisors (7146583).

23121065 is a wasteful number, since it uses less digits than its factorization.

23121065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420399.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 23121065 is about 4808.4368561935. The cubic root of 23121065 is about 284.8848000607.

Adding to 23121065 its reverse (56012132), we get a palindrome (79133197).

The spelling of 23121065 in words is "twenty-three million, one hundred twenty-one thousand, sixty-five".