313012132220 has 48 divisors (see below), whose sum is σ = 692564221440. Its totient is φ = 118598415936.

The previous prime is 313012132183. The next prime is 313012132261. The reversal of 313012132220 is 22231210313.

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 = 313012132192 and 313012132201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3255830 + ... + 3350589.

It is an arithmetic number, because the mean of its divisors is an integer number (14428421280).

Almost surely, 2^313012132220 is an apocalyptic number.

It is an amenable number.

313012132220 is an abundant number, since it is smaller than the sum of its proper divisors (379552089220).

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

313012132220 is a wasteful number, since it uses less digits than its factorization.

313012132220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6606554 (or 6606552 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 313012132220 its reverse (22231210313), we get a palindrome (335243342533).

The spelling of 313012132220 in words is "three hundred thirteen billion, twelve million, one hundred thirty-two thousand, two hundred twenty".