314681209 has 2 divisors, whose sum is σ = 314681210. Its totient is φ = 314681208.

The previous prime is 314681207. The next prime is 314681221. The reversal of 314681209 is 902186413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 227165184 + 87516025 = 15072^2 + 9355^2 .

It is a cyclic number.

It is not a de Polignac number, because 314681209 - 2¹ = 314681207 is a prime.

Together with 314681207, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (314681207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157340604 + 157340605.

It is an arithmetic number, because the mean of its divisors is an integer number (157340605).

Almost surely, 2^314681209 is an apocalyptic number.

It is an amenable number.

314681209 is a deficient number, since it is larger than the sum of its proper divisors (1).

314681209 is an equidigital number, since it uses as much as digits as its factorization.

314681209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 314681209 is about 17739.2561568968. The cubic root of 314681209 is about 680.1796014926.

The spelling of 314681209 in words is "three hundred fourteen million, six hundred eighty-one thousand, two hundred nine".