311320213000 has 32 divisors (see below), whose sum is σ = 728489300760. Its totient is φ = 124528084800.

The previous prime is 311320212911. The next prime is 311320213013. The reversal of 311320213000 is 312023113.

It can be written as a sum of positive squares in 4 ways, for example, as 86517163044 + 224803049956 = 294138^2 + 474134^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155659107 + ... + 155661106.

Almost surely, 2^311320213000 is an apocalyptic number.

It is an amenable number.

311320213000 is an abundant number, since it is smaller than the sum of its proper divisors (417169087760).

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

311320213000 is a wasteful number, since it uses less digits than its factorization.

311320213000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311320234 (or 311320220 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 311320213000 its reverse (312023113), we get a palindrome (311632236113).

The spelling of 311320213000 in words is "three hundred eleven billion, three hundred twenty million, two hundred thirteen thousand".