311313212300 has 72 divisors (see below), whose sum is σ = 717450174000. Its totient is φ = 116845977600.

The previous prime is 311313212299. The next prime is 311313212389. The reversal of 311313212300 is 3212313113.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 286076 + ... + 839324.

It is an arithmetic number, because the mean of its divisors is an integer number (9964585750).

Almost surely, 2^311313212300 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 311313212300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (358725087000).

311313212300 is an abundant number, since it is smaller than the sum of its proper divisors (406136961700).

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

311313212300 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 11 representation: 311313212300 = (110033213132)₁₁.

311313212300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553611 (or 553604 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 311313212300 its reverse (3212313113), we get a palindrome (314525525413).

The spelling of 311313212300 in words is "three hundred eleven billion, three hundred thirteen million, two hundred twelve thousand, three hundred".