213107 has 4 divisors (see below), whose sum is σ = 215280. Its totient is φ = 210936.

The previous prime is 213097. The next prime is 213119. The reversal of 213107 is 701312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213107 - 2⁴ = 213091 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 213091 and 213100.

It is not an unprimeable number, because it can be changed into a prime (213307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 932 + ... + 1137.

It is an arithmetic number, because the mean of its divisors is an integer number (53820).

2²¹³¹⁰⁷ is an apocalyptic number.

213107 is a deficient number, since it is larger than the sum of its proper divisors (2173).

213107 is a wasteful number, since it uses less digits than its factorization.

213107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2172.

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 213107 is about 461.6351373108. The cubic root of 213107 is about 59.7309247419.

Adding to 213107 its reverse (701312), we get a palindrome (914419).

It can be divided in two parts, 213 and 107, that multiplied together give a triangular number (22791 = T₂₁₃).

The spelling of 213107 in words is "two hundred thirteen thousand, one hundred seven".