213104 has 20 divisors (see below), whose sum is σ = 435240. Its totient is φ = 100800.

The previous prime is 213097. The next prime is 213119. The reversal of 213104 is 401312.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47 + ... + 654.

It is an arithmetic number, because the mean of its divisors is an integer number (21762).

2²¹³¹⁰⁴ is an apocalyptic number.

It is an amenable number.

213104 is an abundant number, since it is smaller than the sum of its proper divisors (222136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213104 is a wasteful number, since it uses less digits than its factorization.

213104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728 (or 722 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 213104 is about 461.6318879800. The cubic root of 213104 is about 59.7306444545.

Adding to 213104 its reverse (401312), we get a palindrome (614416).

It can be divided in two parts, 21 and 3104, that added together give a 5-th power (3125 = 5⁵).

The spelling of 213104 in words is "two hundred thirteen thousand, one hundred four".