213422 has 16 divisors (see below), whose sum is σ = 356400. Its totient is φ = 95040.

The previous prime is 213407. The next prime is 213449. The reversal of 213422 is 224312.

213422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 213397 and 213406.

It is a congruent number.

It is an unprimeable number.

213422 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1904 + ... + 2012.

It is an arithmetic number, because the mean of its divisors is an integer number (22275).

2²¹³⁴²² is an apocalyptic number.

213422 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

213422 is a deficient number, since it is larger than the sum of its proper divisors (142978).

213422 is a wasteful number, since it uses less digits than its factorization.

213422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211.

The product of its digits is 96, while the sum is 14.

The square root of 213422 is about 461.9761898626. The cubic root of 213422 is about 59.7603402913.

Adding to 213422 its reverse (224312), we get a palindrome (437734).

It can be divided in two parts, 21 and 3422, that added together give a palindrome (3443).

The spelling of 213422 in words is "two hundred thirteen thousand, four hundred twenty-two".