213443242434 has 24 divisors (see below), whose sum is σ = 474959288700. Its totient is φ = 69224835168.

The previous prime is 213443242429. The next prime is 213443242447. The reversal of 213443242434 is 434242344312.

213443242434 is a `hidden beast` number, since 213 + 4 + 4 + 3 + 2 + 4 + 2 + 434 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 155273038209 + 58170204225 = 394047^2 + 241185^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 160242009 + ... + 160243340.

Almost surely, 2^213443242434 is an apocalyptic number.

213443242434 is an abundant number, since it is smaller than the sum of its proper divisors (261516046266).

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

213443242434 is a wasteful number, since it uses less digits than its factorization.

213443242434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320485394 (or 320485391 counting only the distinct ones).

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

Adding to 213443242434 its reverse (434242344312), we get a palindrome (647685586746).

The spelling of 213443242434 in words is "two hundred thirteen billion, four hundred forty-three million, two hundred forty-two thousand, four hundred thirty-four".