213086 has 4 divisors (see below), whose sum is σ = 319632. Its totient is φ = 106542.

The previous prime is 213079. The next prime is 213091. The reversal of 213086 is 680312.

213086 is digitally balanced in base 3, 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.

It is a congruent number.

It is an unprimeable number.

213086 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53270 + ... + 53273.

It is an arithmetic number, because the mean of its divisors is an integer number (79908).

2²¹³⁰⁸⁶ is an apocalyptic number.

213086 is a deficient number, since it is larger than the sum of its proper divisors (106546).

213086 is a wasteful number, since it uses less digits than its factorization.

213086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106545.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 213086 is about 461.6123915148. The cubic root of 213086 is about 59.7289626749.

Adding to 213086 its reverse (680312), we get a palindrome (893398).

The spelling of 213086 in words is "two hundred thirteen thousand, eighty-six".