313331020220 has 48 divisors (see below), whose sum is σ = 665246312640. Its totient is φ = 123954395136.

The previous prime is 313331020217. The next prime is 313331020237. The reversal of 313331020220 is 22020133313.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 313331020192 and 313331020201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1493996 + ... + 1690764.

It is an arithmetic number, because the mean of its divisors is an integer number (13859298180).

Almost surely, 2^313331020220 is an apocalyptic number.

It is an amenable number.

313331020220 is an abundant number, since it is smaller than the sum of its proper divisors (351915292420).

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

313331020220 is a wasteful number, since it uses less digits than its factorization.

313331020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197654 (or 197652 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 313331020220 its reverse (22020133313), we get a palindrome (335351153533).

The spelling of 313331020220 in words is "three hundred thirteen billion, three hundred thirty-one million, twenty thousand, two hundred twenty".