333813 has 4 divisors (see below), whose sum is σ = 445088. Its totient is φ = 222540.

The previous prime is 333803. The next prime is 333821. The reversal of 333813 is 318333.

333813 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 333813 - 2¹² = 329717 is a prime.

It is a super-2 number, since 2×333813² = 222862237938, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

333813 is strictly pandigital in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 333813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (333803) 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, 55633 + ... + 55638.

It is an arithmetic number, because the mean of its divisors is an integer number (111272).

2³³³⁸¹³ is an apocalyptic number.

It is an amenable number.

333813 is a deficient number, since it is larger than the sum of its proper divisors (111275).

333813 is a wasteful number, since it uses less digits than its factorization.

333813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111274.

The product of its digits is 648, while the sum is 21.

The square root of 333813 is about 577.7655233743. The cubic root of 333813 is about 69.3693697241.

The spelling of 333813 in words is "three hundred thirty-three thousand, eight hundred thirteen".