312330221312 has 18 divisors (see below), whose sum is σ = 623440403208. Its totient is φ = 156165110528.

The previous prime is 312330221311. The next prime is 312330221323. The reversal of 312330221312 is 213122033213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312330221311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610019708 + ... + 610020219.

It is an arithmetic number, because the mean of its divisors is an integer number (34635577956).

Almost surely, 2^312330221312 is an apocalyptic number.

312330221312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

312330221312 is a deficient number, since it is larger than the sum of its proper divisors (311110181896).

312330221312 is an equidigital number, since it uses as much as digits as its factorization.

312330221312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1220039943 (or 1220039929 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 312330221312 its reverse (213122033213), we get a palindrome (525452254525).

The spelling of 312330221312 in words is "three hundred twelve billion, three hundred thirty million, two hundred twenty-one thousand, three hundred twelve".