313203211011220 has 12 divisors (see below), whose sum is σ = 657726743123604. Its totient is φ = 125281284404480.

The previous prime is 313203211011217. The next prime is 313203211011227. The reversal of 313203211011220 is 22110112302313.

It can be written as a sum of positive squares in 2 ways, for example, as 139978760512644 + 173224450498576 = 11831262^2 + 13161476^2 .

It is a junction number, because it is equal to n+sod(n) for n = 313203211011191 and 313203211011200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313203211011227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7830080275261 + ... + 7830080275300.

It is an arithmetic number, because the mean of its divisors is an integer number (54810561926967).

Almost surely, 2^{313203211011220} is an apocalyptic number.

It is an amenable number.

313203211011220 is an abundant number, since it is smaller than the sum of its proper divisors (344523532112384).

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

313203211011220 is a wasteful number, since it uses less digits than its factorization.

313203211011220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15660160550570 (or 15660160550568 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 313203211011220 its reverse (22110112302313), we get a palindrome (335313323313533).

The spelling of 313203211011220 in words is "three hundred thirteen trillion, two hundred three billion, two hundred eleven million, eleven thousand, two hundred twenty".