311513440005 has 32 divisors (see below), whose sum is σ = 562880401920. Its totient is φ = 163416882240.

The previous prime is 311513440003. The next prime is 311513440067. The reversal of 311513440005 is 500044315113.

It is a happy number.

311513440005 is a `hidden beast` number, since 311 + 5 + 1 + 344 + 0 + 0 + 0 + 5 = 666.

It is not a de Polignac number, because 311513440005 - 2¹ = 311513440003 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311513440003) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 18905757 + ... + 18922226.

It is an arithmetic number, because the mean of its divisors is an integer number (17590012560).

Almost surely, 2^311513440005 is an apocalyptic number.

It is an amenable number.

311513440005 is a deficient number, since it is larger than the sum of its proper divisors (251366961915).

311513440005 is a wasteful number, since it uses less digits than its factorization.

311513440005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37828058 (or 37828052 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 311513440005 its reverse (500044315113), we get a palindrome (811557755118).

The spelling of 311513440005 in words is "three hundred eleven billion, five hundred thirteen million, four hundred forty thousand, five".