313231221330 has 16 divisors (see below), whose sum is σ = 751754931264. Its totient is φ = 83528325680.

The previous prime is 313231221323. The next prime is 313231221349. The reversal of 313231221330 is 33122132313.

It is a super-4 number, since 4×313231221330⁴ (a number of 47 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 313231221330.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5220520326 + ... + 5220520385.

It is an arithmetic number, because the mean of its divisors is an integer number (46984683204).

Almost surely, 2^313231221330 is an apocalyptic number.

313231221330 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

313231221330 is an abundant number, since it is smaller than the sum of its proper divisors (438523709934).

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

313231221330 is a wasteful number, since it uses less digits than its factorization.

313231221330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10441040721.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 313231221330 its reverse (33122132313), we get a palindrome (346353353643).

The spelling of 313231221330 in words is "three hundred thirteen billion, two hundred thirty-one million, two hundred twenty-one thousand, three hundred thirty".