213210230031209 has 4 divisors (see below), whose sum is σ = 213238436181120. Its totient is φ = 213182023881300.

The previous prime is 213210230031203. The next prime is 213210230031229. The reversal of 213210230031209 is 902130032012312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 213210230031209 - 2¹⁶ = 213210229965673 is a prime.

It is a super-2 number, since 2×213210230031209² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (213210230031203) by changing a digit.

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, 14103063617 + ... + 14103078734.

It is an arithmetic number, because the mean of its divisors is an integer number (53309609045280).

Almost surely, 2^{213210230031209} is an apocalyptic number.

It is an amenable number.

213210230031209 is a deficient number, since it is larger than the sum of its proper divisors (28206149911).

213210230031209 is an equidigital number, since it uses as much as digits as its factorization.

213210230031209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28206149910.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 213210230031209 in words is "two hundred thirteen trillion, two hundred ten billion, two hundred thirty million, thirty-one thousand, two hundred nine".