20341321 has 24 divisors (see below), whose sum is σ = 27808704. Its totient is φ = 14626080.

The previous prime is 20341313. The next prime is 20341327. The reversal of 20341321 is 12314302.

It is a happy number.

It is not a de Polignac number, because 20341321 - 2³ = 20341313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20341295 and 20341304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20341327) 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 23 ways as a sum of consecutive naturals, for example, 5556 + ... + 8458.

It is an arithmetic number, because the mean of its divisors is an integer number (1158696).

Almost surely, 2^20341321 is an apocalyptic number.

It is an amenable number.

20341321 is a deficient number, since it is larger than the sum of its proper divisors (7467383).

20341321 is a wasteful number, since it uses less digits than its factorization.

20341321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2941 (or 2934 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 20341321 is about 4510.1353638222. The cubic root of 20341321 is about 272.9772060741.

Adding to 20341321 its reverse (12314302), we get a palindrome (32655623).

The spelling of 20341321 in words is "twenty million, three hundred forty-one thousand, three hundred twenty-one".