213234254209 has 8 divisors (see below), whose sum is σ = 214322832360. Its totient is φ = 212147158656.

The previous prime is 213234254201. The next prime is 213234254221. The reversal of 213234254209 is 902452432312.

It can be written as a sum of positive squares in 4 ways, for example, as 42956707600 + 170277546609 = 207260^2 + 412647^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213234254209 - 2³ = 213234254201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213234254201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81694 + ... + 658135.

It is an arithmetic number, because the mean of its divisors is an integer number (26790354045).

Almost surely, 2^213234254209 is an apocalyptic number.

It is an amenable number.

213234254209 is a deficient number, since it is larger than the sum of its proper divisors (1088578151).

213234254209 is a wasteful number, since it uses less digits than its factorization.

213234254209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741299.

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 213234254209 in words is "two hundred thirteen billion, two hundred thirty-four million, two hundred fifty-four thousand, two hundred nine".