213444443430 has 48 divisors (see below), whose sum is σ = 558163429200. Its totient is φ = 56589505344.

The previous prime is 213444443413. The next prime is 213444443441. The reversal of 213444443430 is 34344444312.

213444443430 is a `hidden beast` number, since 2 + 134 + 44 + 443 + 43 + 0 = 666.

213444443430 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×213444443430² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6838780 + ... + 6869919.

It is an arithmetic number, because the mean of its divisors is an integer number (11628404775).

Almost surely, 2^213444443430 is an apocalyptic number.

213444443430 is an abundant number, since it is smaller than the sum of its proper divisors (344718985770).

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

213444443430 is a wasteful number, since it uses less digits than its factorization.

213444443430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13708885 (or 13708882 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 36.

Adding to 213444443430 its reverse (34344444312), we get a palindrome (247788887742).

The spelling of 213444443430 in words is "two hundred thirteen billion, four hundred forty-four million, four hundred forty-three thousand, four hundred thirty".