313531443320 has 64 divisors (see below), whose sum is σ = 730214784000. Its totient is φ = 121014448128.

The previous prime is 313531443317. The next prime is 313531443371. The reversal of 313531443320 is 23344135313.

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, 1847816 + ... + 2010344.

It is an arithmetic number, because the mean of its divisors is an integer number (11409606000).

Almost surely, 2^313531443320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 313531443320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (365107392000).

313531443320 is an abundant number, since it is smaller than the sum of its proper divisors (416683340680).

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

313531443320 is a wasteful number, since it uses less digits than its factorization.

313531443320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164232 (or 164228 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 32.

Adding to 313531443320 its reverse (23344135313), we get a palindrome (336875578633).

The spelling of 313531443320 in words is "three hundred thirteen billion, five hundred thirty-one million, four hundred forty-three thousand, three hundred twenty".