313026321320 has 64 divisors (see below), whose sum is σ = 729476874000. Its totient is φ = 120746723328.

The previous prime is 313026321287. The next prime is 313026321331. The reversal of 313026321320 is 23123620313.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 144264751684 + 168761569636 = 379822^2 + 410806^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 313026321320.

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, 798884 + ... + 1124396.

Almost surely, 2^313026321320 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 313026321320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (364738437000).

313026321320 is an abundant number, since it is smaller than the sum of its proper divisors (416450552680).

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

313026321320 is a wasteful number, since it uses less digits than its factorization.

313026321320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326382 (or 326378 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 313026321320 its reverse (23123620313), we get a palindrome (336149941633).

The spelling of 313026321320 in words is "three hundred thirteen billion, twenty-six million, three hundred twenty-one thousand, three hundred twenty".