311312002620 has 24 divisors (see below), whose sum is σ = 871673607504. Its totient is φ = 83016534016.

The previous prime is 311312002609. The next prime is 311312002637. The reversal of 311312002620 is 26200213113.

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 7 ways as a sum of consecutive naturals, for example, 2594266629 + ... + 2594266748.

It is an arithmetic number, because the mean of its divisors is an integer number (36319733646).

Almost surely, 2^311312002620 is an apocalyptic number.

311312002620 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

311312002620 is an abundant number, since it is smaller than the sum of its proper divisors (560361604884).

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

311312002620 is a wasteful number, since it uses less digits than its factorization.

311312002620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5188533389 (or 5188533387 counting only the distinct ones).

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

Adding to 311312002620 its reverse (26200213113), we get a palindrome (337512215733).

The spelling of 311312002620 in words is "three hundred eleven billion, three hundred twelve million, two thousand, six hundred twenty".