212331030209 has 8 divisors (see below), whose sum is σ = 216762327720. Its totient is φ = 207915475456.

The previous prime is 212331030181. The next prime is 212331030211. The reversal of 212331030209 is 902030133212.

It can be written as a sum of positive squares in 4 ways, for example, as 43982478400 + 168348551809 = 209720^2 + 410303^2 .

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 212331030209 - 2²⁴ = 212314252993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212331030409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3908432 + ... + 3962385.

It is an arithmetic number, because the mean of its divisors is an integer number (27095290965).

Almost surely, 2^212331030209 is an apocalyptic number.

It is an amenable number.

212331030209 is a deficient number, since it is larger than the sum of its proper divisors (4431297511).

212331030209 is an equidigital number, since it uses as much as digits as its factorization.

212331030209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7871379.

The product of its (nonzero) digits is 1944, while the sum is 26.

The spelling of 212331030209 in words is "two hundred twelve billion, three hundred thirty-one million, thirty thousand, two hundred nine".