23421365 has 12 divisors (see below), whose sum is σ = 30893772. Its totient is φ = 17033280.

The previous prime is 23421353. The next prime is 23421371. The reversal of 23421365 is 56312432.

It can be written as a sum of positive squares in 2 ways, for example, as 14070001 + 9351364 = 3751^2 + 3058^2 .

It is not a de Polignac number, because 23421365 - 2¹⁴ = 23404981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18752 + ... + 19961.

It is an arithmetic number, because the mean of its divisors is an integer number (2574481).

Almost surely, 2^23421365 is an apocalyptic number.

It is an amenable number.

23421365 is a deficient number, since it is larger than the sum of its proper divisors (7472407).

23421365 is a wasteful number, since it uses less digits than its factorization.

23421365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38740 (or 38729 counting only the distinct ones).

The product of its digits is 4320, while the sum is 26.

The square root of 23421365 is about 4839.5624802248. The cubic root of 23421365 is about 286.1128745785.

Adding to 23421365 its reverse (56312432), we get a palindrome (79733797).

The spelling of 23421365 in words is "twenty-three million, four hundred twenty-one thousand, three hundred sixty-five".