313591 has 4 divisors (see below), whose sum is σ = 314712. Its totient is φ = 312472.

The previous prime is 313589. The next prime is 313597. The reversal of 313591 is 195313.

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: 195313 = 17 ⋅11489.

It is a cyclic number.

It is not a de Polignac number, because 313591 - 2¹ = 313589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276 + ... + 838.

It is an arithmetic number, because the mean of its divisors is an integer number (78678).

2³¹³⁵⁹¹ is an apocalyptic number.

313591 is a deficient number, since it is larger than the sum of its proper divisors (1121).

313591 is an equidigital number, since it uses as much as digits as its factorization.

313591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120.

The product of its digits is 405, while the sum is 22.

The square root of 313591 is about 559.9919642281. The cubic root of 313591 is about 67.9393201475.

The spelling of 313591 in words is "three hundred thirteen thousand, five hundred ninety-one".