311520055005 has 24 divisors (see below), whose sum is σ = 559966915872. Its totient is φ = 166144028688.

The previous prime is 311520055003. The next prime is 311520055009. The reversal of 311520055005 is 500550025113.

311520055005 is a `hidden beast` number, since 3 + 1 + 152 + 0 + 0 + 5 + 500 + 5 = 666.

It is not a de Polignac number, because 311520055005 - 2¹ = 311520055003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 311520055005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311520055001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 128196339 + ... + 128198768.

It is an arithmetic number, because the mean of its divisors is an integer number (23331954828).

Almost surely, 2^311520055005 is an apocalyptic number.

It is an amenable number.

311520055005 is a deficient number, since it is larger than the sum of its proper divisors (248446860867).

311520055005 is an equidigital number, since it uses as much as digits as its factorization.

311520055005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256395127 (or 256395115 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The spelling of 311520055005 in words is "three hundred eleven billion, five hundred twenty million, fifty-five thousand, five".