63105321 has 16 divisors (see below), whose sum is σ = 85063680. Its totient is φ = 41611920.

The previous prime is 63105269. The next prime is 63105323. The reversal of 63105321 is 12350136.

63105321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 63105321 - 2⁶ = 63105257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63105323) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 202756 + ... + 203066.

It is an arithmetic number, because the mean of its divisors is an integer number (5316480).

Almost surely, 2^63105321 is an apocalyptic number.

It is an amenable number.

63105321 is a deficient number, since it is larger than the sum of its proper divisors (21958359).

63105321 is a wasteful number, since it uses less digits than its factorization.

63105321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 63105321 is about 7943.8857620185. The cubic root of 63105321 is about 398.1273318837.

Adding to 63105321 its reverse (12350136), we get a palindrome (75455457).

The spelling of 63105321 in words is "sixty-three million, one hundred five thousand, three hundred twenty-one".