213118 has 16 divisors (see below), whose sum is σ = 344736. Its totient is φ = 98560.

The previous prime is 213097. The next prime is 213119. The reversal of 213118 is 811312.

213118 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213119) by changing a digit.

213118 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 in 7 ways as a sum of consecutive naturals, for example, 1830 + ... + 1942.

It is an arithmetic number, because the mean of its divisors is an integer number (21546).

2²¹³¹¹⁸ is an apocalyptic number.

213118 is a deficient number, since it is larger than the sum of its proper divisors (131618).

213118 is a wasteful number, since it uses less digits than its factorization.

213118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179.

The product of its digits is 48, while the sum is 16.

The square root of 213118 is about 461.6470513282. The cubic root of 213118 is about 59.7319524398.

The spelling of 213118 in words is "two hundred thirteen thousand, one hundred eighteen".