213906517422 has 24 divisors (see below), whose sum is σ = 463253170104. Its totient is φ = 65817389664.

The previous prime is 213906517393. The next prime is 213906517427. The reversal of 213906517422 is 224715609312.

It is a happy number.

213906517422 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213906517427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105475573 + ... + 105477600.

It is an arithmetic number, because the mean of its divisors is an integer number (19302215421).

Almost surely, 2^213906517422 is an apocalyptic number.

213906517422 is an abundant number, since it is smaller than the sum of its proper divisors (249346652682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213906517422 is a wasteful number, since it uses less digits than its factorization.

213906517422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210953204 (or 210953191 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 213906517422 in words is "two hundred thirteen billion, nine hundred six million, five hundred seventeen thousand, four hundred twenty-two".