316105321 has 12 divisors (see below), whose sum is σ = 370367760. Its totient is φ = 268992360.

The previous prime is 316105301. The next prime is 316105333. The reversal of 316105321 is 123501613.

It is a happy number.

It is not a de Polignac number, because 316105321 - 2⁵ = 316105289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 316105292 and 316105301.

It is not an unprimeable number, because it can be changed into a prime (316105301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16395 + ... + 30016.

It is an arithmetic number, because the mean of its divisors is an integer number (30863980).

Almost surely, 2^316105321 is an apocalyptic number.

It is an amenable number.

316105321 is a deficient number, since it is larger than the sum of its proper divisors (54262439).

316105321 is a wasteful number, since it uses less digits than its factorization.

316105321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46564 (or 46557 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 316105321 is about 17779.3509724062. The cubic root of 316105321 is about 681.2041244421.

Adding to 316105321 its reverse (123501613), we get a palindrome (439606934).

The spelling of 316105321 in words is "three hundred sixteen million, one hundred five thousand, three hundred twenty-one".