213143422 has 16 divisors (see below), whose sum is σ = 329883840. Its totient is φ = 103233312.

The previous prime is 213143407. The next prime is 213143423. The reversal of 213143422 is 224341312.

It is a junction number, because it is equal to n+sod(n) for n = 213143393 and 213143402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213143423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4353 + ... + 21100.

It is an arithmetic number, because the mean of its divisors is an integer number (20617740).

Almost surely, 2^213143422 is an apocalyptic number.

213143422 is a deficient number, since it is larger than the sum of its proper divisors (116740418).

213143422 is a wasteful number, since it uses less digits than its factorization.

213143422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25587.

The product of its digits is 1152, while the sum is 22.

The square root of 213143422 is about 14599.4322492349. The cubic root of 213143422 is about 597.3432740787.

Adding to 213143422 its reverse (224341312), we get a palindrome (437484734).

The spelling of 213143422 in words is "two hundred thirteen million, one hundred forty-three thousand, four hundred twenty-two".