311023121103 has 24 divisors (see below), whose sum is σ = 461712307056. Its totient is φ = 201632457600.

The previous prime is 311023121083. The next prime is 311023121111. The reversal of 311023121103 is 301121320113.

311023121103 is a `hidden beast` number, since 311 + 0 + 231 + 21 + 103 = 666.

It is not a de Polignac number, because 311023121103 - 2⁸ = 311023120847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311023121203) 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 23 ways as a sum of consecutive naturals, for example, 1259488 + ... + 1486053.

It is an arithmetic number, because the mean of its divisors is an integer number (19238012794).

Almost surely, 2^311023121103 is an apocalyptic number.

311023121103 is a deficient number, since it is larger than the sum of its proper divisors (150689185953).

311023121103 is a wasteful number, since it uses less digits than its factorization.

311023121103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2745895 (or 2745892 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 311023121103 its reverse (301121320113), we get a palindrome (612144441216).

The spelling of 311023121103 in words is "three hundred eleven billion, twenty-three million, one hundred twenty-one thousand, one hundred three".