313131313200220 has 24 divisors (see below), whose sum is σ = 657721658898864. Its totient is φ = 125224734579456.

The previous prime is 313131313200151. The next prime is 313131313200221. The reversal of 313131313200220 is 22002313131313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313131313200221) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1736826397 + ... + 1737006676.

It is an arithmetic number, because the mean of its divisors is an integer number (27405069120786).

Almost surely, 2^{313131313200220} is an apocalyptic number.

It is an amenable number.

313131313200220 is an abundant number, since it is smaller than the sum of its proper divisors (344590345698644).

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

313131313200220 is a wasteful number, since it uses less digits than its factorization.

313131313200220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3473837589 (or 3473837587 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 313131313200220 its reverse (22002313131313), we get a palindrome (335133626331533).

The spelling of 313131313200220 in words is "three hundred thirteen trillion, one hundred thirty-one billion, three hundred thirteen million, two hundred thousand, two hundred twenty".