201212302231 has 4 divisors (see below), whose sum is σ = 201938700712. Its totient is φ = 200485903752.

The previous prime is 201212302223. The next prime is 201212302267. The reversal of 201212302231 is 132203212102.

201212302231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201212302231 - 2³ = 201212302223 is a prime.

It is a super-2 number, since 2×201212302231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201212302199 and 201212302208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201212302201) 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, 363198825 + ... + 363199378.

It is an arithmetic number, because the mean of its divisors is an integer number (50484675178).

Almost surely, 2^201212302231 is an apocalyptic number.

201212302231 is a deficient number, since it is larger than the sum of its proper divisors (726398481).

201212302231 is an equidigital number, since it uses as much as digits as its factorization.

201212302231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726398480.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 201212302231 its reverse (132203212102), we get a palindrome (333415514333).

The spelling of 201212302231 in words is "two hundred one billion, two hundred twelve million, three hundred two thousand, two hundred thirty-one".