313256873 has 4 divisors (see below), whose sum is σ = 313292628. Its totient is φ = 313221120.

The previous prime is 313256863. The next prime is 313256893. The reversal of 313256873 is 378652313.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 378652313 = 13 ⋅29127101.

It can be written as a sum of positive squares in 2 ways, for example, as 205865104 + 107391769 = 14348^2 + 10363^2 .

It is a cyclic number.

It is not a de Polignac number, because 313256873 - 2¹⁰ = 313255849 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (313256813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5165 + ... + 25557.

It is an arithmetic number, because the mean of its divisors is an integer number (78323157).

Almost surely, 2^313256873 is an apocalyptic number.

It is an amenable number.

313256873 is a deficient number, since it is larger than the sum of its proper divisors (35755).

313256873 is a wasteful number, since it uses less digits than its factorization.

313256873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35754.

The product of its digits is 90720, while the sum is 38.

The square root of 313256873 is about 17699.0641843008. The cubic root of 313256873 is about 679.1518209476.

The spelling of 313256873 in words is "three hundred thirteen million, two hundred fifty-six thousand, eight hundred seventy-three".