311311320123 has 32 divisors (see below), whose sum is σ = 425236331520. Its totient is φ = 202492235520.

The previous prime is 311311320097. The next prime is 311311320143. The reversal of 311311320123 is 321023113113.

It is a happy number.

311311320123 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 311311320123 - 2⁹ = 311311319611 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 311311320123.

It is not an unprimeable number, because it can be changed into a prime (311311320143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70605943 + ... + 70610351.

It is an arithmetic number, because the mean of its divisors is an integer number (13288635360).

Almost surely, 2^311311320123 is an apocalyptic number.

311311320123 is a deficient number, since it is larger than the sum of its proper divisors (113925011397).

311311320123 is a wasteful number, since it uses less digits than its factorization.

311311320123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5907.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 311311320123 its reverse (321023113113), we get a palindrome (632334433236).

The spelling of 311311320123 in words is "three hundred eleven billion, three hundred eleven million, three hundred twenty thousand, one hundred twenty-three".