312231030212 has 12 divisors (see below), whose sum is σ = 546409551660. Its totient is φ = 156114015456.

The previous prime is 312231030197. The next prime is 312231030253. The reversal of 312231030212 is 212030132213.

It can be written as a sum of positive squares in 2 ways, for example, as 104674249156 + 207556781056 = 323534^2 + 455584^2 .

It is an unprimeable number.

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, 187178 + ... + 812094.

It is an arithmetic number, because the mean of its divisors is an integer number (45534129305).

Almost surely, 2^312231030212 is an apocalyptic number.

It is an amenable number.

312231030212 is a deficient number, since it is larger than the sum of its proper divisors (234178521448).

312231030212 is a wasteful number, since it uses less digits than its factorization.

312231030212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749830 (or 749828 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 312231030212 its reverse (212030132213), we get a palindrome (524261162425).

The spelling of 312231030212 in words is "three hundred twelve billion, two hundred thirty-one million, thirty thousand, two hundred twelve".