321116306 has 24 divisors (see below), whose sum is σ = 560951820. Its totient is φ = 137464992.

The previous prime is 321116297. The next prime is 321116371. The reversal of 321116306 is 603611123.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 279190681 + 41925625 = 16709^2 + 6475^2 .

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, 138896 + ... + 141188.

Almost surely, 2^321116306 is an apocalyptic number.

321116306 is a deficient number, since it is larger than the sum of its proper divisors (239835514).

321116306 is a wasteful number, since it uses less digits than its factorization.

321116306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3738 (or 3731 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 321116306 is about 17919.7183571618. The cubic root of 321116306 is about 684.7848124402.

Adding to 321116306 its reverse (603611123), we get a palindrome (924727429).

The spelling of 321116306 in words is "three hundred twenty-one million, one hundred sixteen thousand, three hundred six".