316946809 has 9 divisors (see below), whose sum is σ = 334863567. Its totient is φ = 299944944.

The previous prime is 316946797. The next prime is 316946813. The reversal of 316946809 is 908649613.

The square root of 316946809 is 17803.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 16687225 + 300259584 = 4085^2 + 17328^2 .

It is not a de Polignac number, because 316946809 - 2⁷ = 316946681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (316946869) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 337789 + ... + 338725.

It is an arithmetic number, because the mean of its divisors is an integer number (37207063).

Almost surely, 2^316946809 is an apocalyptic number.

316946809 is the 17803-rd square number.

316946809 is the 8902-nd centered octagonal number.

It is an amenable number.

316946809 is a deficient number, since it is larger than the sum of its proper divisors (17916758).

316946809 is an frugal number, since it uses more digits than its factorization.

316946809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1912 (or 956 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 46.

The cubic root of 316946809 is about 681.8080552188.

It can be divided in two parts, 31694 and 6809, that added together give a triangular number (38503 = T₂₇₇).

The spelling of 316946809 in words is "three hundred sixteen million, nine hundred forty-six thousand, eight hundred nine".