313813 has 8 divisors (see below), whose sum is σ = 331776. Its totient is φ = 296400.

The previous prime is 313783. The next prime is 313829. The reversal of 313813 is 318313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 313813 - 2⁹ = 313301 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 (313853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1548 + ... + 1738.

It is an arithmetic number, because the mean of its divisors is an integer number (41472).

2³¹³⁸¹³ is an apocalyptic number.

It is an amenable number.

313813 is a deficient number, since it is larger than the sum of its proper divisors (17963).

313813 is a wasteful number, since it uses less digits than its factorization.

313813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275.

The product of its digits is 216, while the sum is 19.

The square root of 313813 is about 560.1901462896. The cubic root of 313813 is about 67.9553484257.

It can be divided in two parts, 31 and 3813, that added together give a square (3844 = 62²).

The spelling of 313813 in words is "three hundred thirteen thousand, eight hundred thirteen".