316007321 has 12 divisors (see below), whose sum is σ = 368270388. Its totient is φ = 270369792.

The previous prime is 316007303. The next prime is 316007333. The reversal of 316007321 is 123700613.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 300640921 + 15366400 = 17339^2 + 3920^2 .

It is not a de Polignac number, because 316007321 - 2⁶ = 316007257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (316007621) 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, 22685 + ... + 33861.

It is an arithmetic number, because the mean of its divisors is an integer number (30689199).

Almost surely, 2^316007321 is an apocalyptic number.

It is an amenable number.

316007321 is a deficient number, since it is larger than the sum of its proper divisors (52263067).

316007321 is a wasteful number, since it uses less digits than its factorization.

316007321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11768 (or 11761 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 316007321 is about 17776.5947526516. The cubic root of 316007321 is about 681.1337207931.

Adding to 316007321 its reverse (123700613), we get a palindrome (439707934).

The spelling of 316007321 in words is "three hundred sixteen million, seven thousand, three hundred twenty-one".