313309279 has 2 divisors, whose sum is σ = 313309280. Its totient is φ = 313309278.

The previous prime is 313309277. The next prime is 313309291. The reversal of 313309279 is 972903313.

It is a weak prime.

It is an emirp because it is prime and its reverse (972903313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 313309279 - 2¹ = 313309277 is a prime.

It is a super-3 number, since 3×313309279³ (a number of 26 digits) contains 333 as substring.

Together with 313309277, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313309277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156654639 + 156654640.

It is an arithmetic number, because the mean of its divisors is an integer number (156654640).

Almost surely, 2^313309279 is an apocalyptic number.

313309279 is a deficient number, since it is larger than the sum of its proper divisors (1).

313309279 is an equidigital number, since it uses as much as digits as its factorization.

313309279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30618, while the sum is 37.

The square root of 313309279 is about 17700.5445961417. The cubic root of 313309279 is about 679.1896915141.

The spelling of 313309279 in words is "three hundred thirteen million, three hundred nine thousand, two hundred seventy-nine".