313221102320 has 80 divisors (see below), whose sum is σ = 842808437760. Its totient is φ = 106030708992.

The previous prime is 313221102209. The next prime is 313221102323. The reversal of 313221102320 is 23201122313.

It is a tau number, because it is divible by the number of its divisors (80).

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 = 313221102292 and 313221102301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313221102323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3495782 + ... + 3584261.

It is an arithmetic number, because the mean of its divisors is an integer number (10535105472).

Almost surely, 2^313221102320 is an apocalyptic number.

It is an amenable number.

313221102320 is an abundant number, since it is smaller than the sum of its proper divisors (529587335440).

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

313221102320 is a wasteful number, since it uses less digits than its factorization.

313221102320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7080142 (or 7080136 counting only the distinct ones).

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

Adding to 313221102320 its reverse (23201122313), we get a palindrome (336422224633).

The spelling of 313221102320 in words is "three hundred thirteen billion, two hundred twenty-one million, one hundred two thousand, three hundred twenty".