335813 has 2 divisors, whose sum is σ = 335814. Its totient is φ = 335812.

The previous prime is 335809. The next prime is 335821. The reversal of 335813 is 318533.

335813 is nontrivially palindromic in base 2.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 247009 + 88804 = 497^2 + 298^2 .

It is a cyclic number.

It is not a de Polignac number, because 335813 - 2² = 335809 is a prime.

It is a super-2 number, since 2×335813² = 225540741938, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (335833) 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 as a sum of consecutive naturals, namely, 167906 + 167907.

It is an arithmetic number, because the mean of its divisors is an integer number (167907).

2³³⁵⁸¹³ is an apocalyptic number.

It is an amenable number.

335813 is a deficient number, since it is larger than the sum of its proper divisors (1).

335813 is an equidigital number, since it uses as much as digits as its factorization.

335813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 23.

The square root of 335813 is about 579.4937445737. The cubic root of 335813 is about 69.5076333420.

Subtracting from 335813 its sum of digits (23), we obtain a triangular number (335790 = T₈₁₉).

The spelling of 335813 in words is "three hundred thirty-five thousand, eight hundred thirteen".