20321063 has 8 divisors (see below), whose sum is σ = 23347200. Its totient is φ = 17325720.

The previous prime is 20321057. The next prime is 20321071. The reversal of 20321063 is 36012302.

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 20321063 - 2⁶ = 20320999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20321003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6263 + ... + 8936.

It is an arithmetic number, because the mean of its divisors is an integer number (2918400).

Almost surely, 2^20321063 is an apocalyptic number.

20321063 is a deficient number, since it is larger than the sum of its proper divisors (3026137).

20321063 is a wasteful number, since it uses less digits than its factorization.

20321063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15397.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 20321063 is about 4507.8889737881. Note that the first 3 decimals coincide. The cubic root of 20321063 is about 272.8865562907.

Adding to 20321063 its reverse (36012302), we get a palindrome (56333365).

The spelling of 20321063 in words is "twenty million, three hundred twenty-one thousand, sixty-three".