3218320563 has 16 divisors (see below), whose sum is σ = 4488046080. Its totient is φ = 2047503744.

The previous prime is 3218320561. The next prime is 3218320571. The reversal of 3218320563 is 3650238123.

It is not a de Polignac number, because 3218320563 - 2¹ = 3218320561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3218320561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23983 + ... + 83736.

It is an arithmetic number, because the mean of its divisors is an integer number (280502880).

Almost surely, 2^3218320563 is an apocalyptic number.

3218320563 is a deficient number, since it is larger than the sum of its proper divisors (1269725517).

3218320563 is a wasteful number, since it uses less digits than its factorization.

3218320563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108178.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 3218320563 is about 56730.2438122735. The cubic root of 3218320563 is about 1476.4194800885.

Adding to 3218320563 its reverse (3650238123), we get a palindrome (6868558686).

The spelling of 3218320563 in words is "three billion, two hundred eighteen million, three hundred twenty thousand, five hundred sixty-three".