314279509 has 2 divisors, whose sum is σ = 314279510. Its totient is φ = 314279508.

The previous prime is 314279431. The next prime is 314279543. The reversal of 314279509 is 905972413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202977009 + 111302500 = 14247^2 + 10550^2 .

It is a cyclic number.

It is not a de Polignac number, because 314279509 - 2²⁷ = 180061781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (314279569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157139754 + 157139755.

It is an arithmetic number, because the mean of its divisors is an integer number (157139755).

Almost surely, 2^314279509 is an apocalyptic number.

It is an amenable number.

314279509 is a deficient number, since it is larger than the sum of its proper divisors (1).

314279509 is an equidigital number, since it uses as much as digits as its factorization.

314279509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 314279509 is about 17727.9301950340. The cubic root of 314279509 is about 679.8900550332.

The spelling of 314279509 in words is "three hundred fourteen million, two hundred seventy-nine thousand, five hundred nine".