311200211320 has 16 divisors (see below), whose sum is σ = 700200475560. Its totient is φ = 124480084512.

The previous prime is 311200211303. The next prime is 311200211363. The reversal of 311200211320 is 23112002113.

It is a super-2 number, since 2×311200211320² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 311200211294 and 311200211303.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3890002602 + ... + 3890002681.

Almost surely, 2^311200211320 is an apocalyptic number.

It is an amenable number.

311200211320 is an abundant number, since it is smaller than the sum of its proper divisors (389000264240).

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

311200211320 is a wasteful number, since it uses less digits than its factorization.

311200211320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7780005294 (or 7780005290 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 311200211320 its reverse (23112002113), we get a palindrome (334312213433).

The spelling of 311200211320 in words is "three hundred eleven billion, two hundred million, two hundred eleven thousand, three hundred twenty".