213707 has 8 divisors (see below), whose sum is σ = 243936. Its totient is φ = 185472.

The previous prime is 213659. The next prime is 213713. The reversal of 213707 is 707312.

213707 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213707 - 2¹⁰ = 212683 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263 + ... + 704.

It is an arithmetic number, because the mean of its divisors is an integer number (30492).

2²¹³⁷⁰⁷ is an apocalyptic number.

213707 is a deficient number, since it is larger than the sum of its proper divisors (30229).

213707 is a wasteful number, since it uses less digits than its factorization.

213707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997.

The product of its (nonzero) digits is 294, while the sum is 20.

The square root of 213707 is about 462.2845444096. The cubic root of 213707 is about 59.7869294297.

The spelling of 213707 in words is "two hundred thirteen thousand, seven hundred seven".