313230021220 has 24 divisors (see below), whose sum is σ = 657922515264. Its totient is φ = 125265442656.

The previous prime is 313230021217. The next prime is 313230021227. The reversal of 313230021220 is 22120032313.

It is a super-2 number, since 2×313230021220² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (313230021227) 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, 1563544 + ... + 1752463.

It is an arithmetic number, because the mean of its divisors is an integer number (27413438136).

Almost surely, 2^313230021220 is an apocalyptic number.

It is an amenable number.

313230021220 is an abundant number, since it is smaller than the sum of its proper divisors (344692494044).

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

313230021220 is a wasteful number, since it uses less digits than its factorization.

313230021220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3320739 (or 3320737 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 313230021220 its reverse (22120032313), we get a palindrome (335350053533).

The spelling of 313230021220 in words is "three hundred thirteen billion, two hundred thirty million, twenty-one thousand, two hundred twenty".