313278279 has 4 divisors (see below), whose sum is σ = 417704376. Its totient is φ = 208852184.

The previous prime is 313278269. The next prime is 313278293. The reversal of 313278279 is 972872313.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 313278279 - 2¹¹ = 313276231 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 313278279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313278209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52213044 + ... + 52213049.

It is an arithmetic number, because the mean of its divisors is an integer number (104426094).

Almost surely, 2^313278279 is an apocalyptic number.

313278279 is a deficient number, since it is larger than the sum of its proper divisors (104426097).

313278279 is a wasteful number, since it uses less digits than its factorization.

313278279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104426096.

The product of its digits is 127008, while the sum is 42.

The square root of 313278279 is about 17699.6688952082. The cubic root of 313278279 is about 679.1672902466.

The spelling of 313278279 in words is "three hundred thirteen million, two hundred seventy-eight thousand, two hundred seventy-nine".