213859 has 2 divisors, whose sum is σ = 213860. Its totient is φ = 213858.

The previous prime is 213847. The next prime is 213881. The reversal of 213859 is 958312.

213859 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213859 - 2⁵ = 213827 is a prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (213359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106929 + 106930.

It is an arithmetic number, because the mean of its divisors is an integer number (106930).

2²¹³⁸⁵⁹ is an apocalyptic number.

213859 is a deficient number, since it is larger than the sum of its proper divisors (1).

213859 is an equidigital number, since it uses as much as digits as its factorization.

213859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 28.

The square root of 213859 is about 462.4489160978. The cubic root of 213859 is about 59.8011006386.

It can be divided in two parts, 2138 and 59, that added together give a cube (2197 = 13³).

The spelling of 213859 in words is "two hundred thirteen thousand, eight hundred fifty-nine".