23144021 has 8 divisors (see below), whose sum is σ = 24672600. Its totient is φ = 21634048.

The previous prime is 23143999. The next prime is 23144027. The reversal of 23144021 is 12044132.

It can be written as a sum of positive squares in 4 ways, for example, as 7921 + 23136100 = 89^2 + 4810^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 23144021 - 2¹⁰ = 23142997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23144027) 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, 2036 + ... + 7101.

It is an arithmetic number, because the mean of its divisors is an integer number (3084075).

Almost surely, 2^23144021 is an apocalyptic number.

It is an amenable number.

23144021 is a deficient number, since it is larger than the sum of its proper divisors (1528579).

23144021 is a wasteful number, since it uses less digits than its factorization.

23144021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9303.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 23144021 is about 4810.8233183105. The cubic root of 23144021 is about 284.9790525283.

Adding to 23144021 its reverse (12044132), we get a palindrome (35188153).

The spelling of 23144021 in words is "twenty-three million, one hundred forty-four thousand, twenty-one".