213479 has 4 divisors (see below), whose sum is σ = 243984. Its totient is φ = 182976.

The previous prime is 213467. The next prime is 213481. The reversal of 213479 is 974312.

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 213479 - 2⁸ = 213223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213449) 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, 15242 + ... + 15255.

It is an arithmetic number, because the mean of its divisors is an integer number (60996).

2²¹³⁴⁷⁹ is an apocalyptic number.

213479 is a deficient number, since it is larger than the sum of its proper divisors (30505).

213479 is an equidigital number, since it uses as much as digits as its factorization.

213479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30504.

The product of its digits is 1512, while the sum is 26.

The square root of 213479 is about 462.0378772352. The cubic root of 213479 is about 59.7656600118.

The spelling of 213479 in words is "two hundred thirteen thousand, four hundred seventy-nine".