312221041000 has 64 divisors (see below), whose sum is σ = 797015194560. Its totient is φ = 113534920000.

The previous prime is 312221040991. The next prime is 312221041003. The reversal of 312221041000 is 140122213.

It is not an unprimeable number, because it can be changed into a prime (312221041003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14180866 + ... + 14202865.

It is an arithmetic number, because the mean of its divisors is an integer number (12453362415).

Almost surely, 2^312221041000 is an apocalyptic number.

It is an amenable number.

312221041000 is an abundant number, since it is smaller than the sum of its proper divisors (484794153560).

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

312221041000 is a wasteful number, since it uses less digits than its factorization.

312221041000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28383763 (or 28383749 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 312221041000 its reverse (140122213), we get a palindrome (312361163213).

The spelling of 312221041000 in words is "three hundred twelve billion, two hundred twenty-one million, forty-one thousand".