311323203231020 has 12 divisors (see below), whose sum is σ = 653778726785184. Its totient is φ = 124529281292400.

The previous prime is 311323203231011. The next prime is 311323203231049. The reversal of 311323203231020 is 20132302323113.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7783080080756 + ... + 7783080080795.

It is an arithmetic number, because the mean of its divisors is an integer number (54481560565432).

Almost surely, 2^{311323203231020} is an apocalyptic number.

It is an amenable number.

311323203231020 is an abundant number, since it is smaller than the sum of its proper divisors (342455523554164).

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

311323203231020 is a wasteful number, since it uses less digits than its factorization.

311323203231020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15566160161560 (or 15566160161558 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 311323203231020 its reverse (20132302323113), we get a palindrome (331455505554133).

The spelling of 311323203231020 in words is "three hundred eleven trillion, three hundred twenty-three billion, two hundred three million, two hundred thirty-one thousand, twenty".