311323201320 has 64 divisors (see below), whose sum is σ = 934363379520. Its totient is φ = 82984518144.

The previous prime is 311323201289. The next prime is 311323201327. The reversal of 311323201320 is 23102323113.

It is not an unprimeable number, because it can be changed into a prime (311323201327) 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, 260482 + ... + 830961.

It is an arithmetic number, because the mean of its divisors is an integer number (14599427805).

Almost surely, 2^311323201320 is an apocalyptic number.

311323201320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

311323201320 is an abundant number, since it is smaller than the sum of its proper divisors (623040178200).

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

311323201320 is a wasteful number, since it uses less digits than its factorization.

311323201320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093834 (or 1093830 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 311323201320 its reverse (23102323113), we get a palindrome (334425524433).

The spelling of 311323201320 in words is "three hundred eleven billion, three hundred twenty-three million, two hundred one thousand, three hundred twenty".