213581422 has 16 divisors (see below), whose sum is σ = 322754544. Its totient is φ = 106000000.

The previous prime is 213581411. The next prime is 213581443. The reversal of 213581422 is 224185312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200772 + ... + 201832.

It is an arithmetic number, because the mean of its divisors is an integer number (20172159).

Almost surely, 2^213581422 is an apocalyptic number.

213581422 is a deficient number, since it is larger than the sum of its proper divisors (109173122).

213581422 is a wasteful number, since it uses less digits than its factorization.

213581422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1715.

The product of its digits is 3840, while the sum is 28.

The square root of 213581422 is about 14614.4251340927. The cubic root of 213581422 is about 597.7521651734.

The spelling of 213581422 in words is "two hundred thirteen million, five hundred eighty-one thousand, four hundred twenty-two".