312221340130312 has 128 divisors (see below), whose sum is σ = 639750496083840. Its totient is φ = 142292571033600.

The previous prime is 312221340130309. The next prime is 312221340130333. The reversal of 312221340130312 is 213031043122213.

It is a super-3 number, since 3×312221340130312³ (a number of 44 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 212907187 + ... + 214368637.

It is an arithmetic number, because the mean of its divisors is an integer number (4998050750655).

Almost surely, 2^{312221340130312} is an apocalyptic number.

It is an amenable number.

312221340130312 is an abundant number, since it is smaller than the sum of its proper divisors (327529155953528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

312221340130312 is a wasteful number, since it uses less digits than its factorization.

312221340130312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1461911 (or 1461907 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 312221340130312 its reverse (213031043122213), we get a palindrome (525252383252525).

The spelling of 312221340130312 in words is "three hundred twelve trillion, two hundred twenty-one billion, three hundred forty million, one hundred thirty thousand, three hundred twelve".