213422279 has 8 divisors (see below), whose sum is σ = 244108800. Its totient is φ = 182785176.

The previous prime is 213422273. The next prime is 213422291. The reversal of 213422279 is 972224312.

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

It is not a de Polignac number, because 213422279 - 2⁴ = 213422263 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 (213422273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2579 + ... + 20820.

It is an arithmetic number, because the mean of its divisors is an integer number (30513600).

Almost surely, 2^213422279 is an apocalyptic number.

213422279 is a deficient number, since it is larger than the sum of its proper divisors (30686521).

213422279 is a wasteful number, since it uses less digits than its factorization.

213422279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24709.

The product of its digits is 12096, while the sum is 32.

The square root of 213422279 is about 14608.9793962480. The cubic root of 213422279 is about 597.6036633220.

The spelling of 213422279 in words is "two hundred thirteen million, four hundred twenty-two thousand, two hundred seventy-nine".