313221101331012 has 24 divisors (see below), whose sum is σ = 835256270216256. Its totient is φ = 89491743237408.

The previous prime is 313221101331011. The next prime is 313221101331031. The reversal of 313221101331012 is 210133101122313.

It is not an unprimeable number, because it can be changed into a prime (313221101331011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1864411317363 + ... + 1864411317530.

It is an arithmetic number, because the mean of its divisors is an integer number (34802344592344).

Almost surely, 2^{313221101331012} is an apocalyptic number.

It is an amenable number.

313221101331012 is an abundant number, since it is smaller than the sum of its proper divisors (522035168885244).

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

313221101331012 is a wasteful number, since it uses less digits than its factorization.

313221101331012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3728822634907 (or 3728822634905 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

Adding to 313221101331012 its reverse (210133101122313), we get a palindrome (523354202453325).

The spelling of 313221101331012 in words is "three hundred thirteen trillion, two hundred twenty-one billion, one hundred one million, three hundred thirty-one thousand, twelve".