311123212320 has 96 divisors (see below), whose sum is σ = 980511763392. Its totient is φ = 82926093312.

The previous prime is 311123212319. The next prime is 311123212321. The reversal of 311123212320 is 23212321113.

It is an interprime number because it is at equal distance from previous prime (311123212319) and next prime (311123212321).

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (311123212321) 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, 844254 + ... + 1155426.

It is an arithmetic number, because the mean of its divisors is an integer number (10213664202).

Almost surely, 2^311123212320 is an apocalyptic number.

311123212320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

311123212320 is an abundant number, since it is smaller than the sum of its proper divisors (669388551072).

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

311123212320 is a wasteful number, since it uses less digits than its factorization.

311123212320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313274 (or 313266 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 311123212320 its reverse (23212321113), we get a palindrome (334335533433).

The spelling of 311123212320 in words is "three hundred eleven billion, one hundred twenty-three million, two hundred twelve thousand, three hundred twenty".