314321209 has 2 divisors, whose sum is σ = 314321210. Its totient is φ = 314321208.

The previous prime is 314321207. The next prime is 314321219. The reversal of 314321209 is 902123413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 308775184 + 5546025 = 17572^2 + 2355^2 .

It is a cyclic number.

It is not a de Polignac number, because 314321209 - 2¹ = 314321207 is a prime.

Together with 314321207, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (314321207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157160604 + 157160605.

It is an arithmetic number, because the mean of its divisors is an integer number (157160605).

Almost surely, 2^314321209 is an apocalyptic number.

It is an amenable number.

314321209 is a deficient number, since it is larger than the sum of its proper divisors (1).

314321209 is an equidigital number, since it uses as much as digits as its factorization.

314321209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 314321209 is about 17729.1062662504. The cubic root of 314321209 is about 679.9201239799.

The spelling of 314321209 in words is "three hundred fourteen million, three hundred twenty-one thousand, two hundred nine".