213251318252 has 12 divisors (see below), whose sum is σ = 426502636560. Its totient is φ = 91393422096.

The previous prime is 213251318221. The next prime is 213251318261. The reversal of 213251318252 is 252813152312.

213251318252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

213251318252 is an admirable number.

It is a super-2 number, since 2×213251318252² (a number of 23 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 3808059227 + ... + 3808059282.

It is an arithmetic number, because the mean of its divisors is an integer number (35541886380).

Almost surely, 2^213251318252 is an apocalyptic number.

It is an amenable number.

213251318252 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

213251318252 is a wasteful number, since it uses less digits than its factorization.

213251318252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7616118520 (or 7616118518 counting only the distinct ones).

The product of its digits is 28800, while the sum is 35.

The spelling of 213251318252 in words is "two hundred thirteen billion, two hundred fifty-one million, three hundred eighteen thousand, two hundred fifty-two".