311030031012320 has 48 divisors (see below), whose sum is σ = 734810644149120. Its totient is φ = 124411640615424.

The previous prime is 311030031012301. The next prime is 311030031012359. The reversal of 311030031012320 is 23210130030113.

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

It is a junction number, because it is equal to n+sod(n) for n = 311030031012292 and 311030031012301.

It is a congruent number.

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, 54315089 + ... + 59767791.

It is an arithmetic number, because the mean of its divisors is an integer number (15308555086440).

Almost surely, 2^{311030031012320} is an apocalyptic number.

It is an amenable number.

311030031012320 is an abundant number, since it is smaller than the sum of its proper divisors (423780613136800).

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

311030031012320 is a wasteful number, since it uses less digits than its factorization.

311030031012320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5809227 (or 5809219 counting only the distinct ones).

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

Adding to 311030031012320 its reverse (23210130030113), we get a palindrome (334240161042433).

The spelling of 311030031012320 in words is "three hundred eleven trillion, thirty billion, thirty-one million, twelve thousand, three hundred twenty".