311210112123 has 16 divisors (see below), whose sum is σ = 461062129440. Its totient is φ = 207468857952.

The previous prime is 311210112121. The next prime is 311210112163. The reversal of 311210112123 is 321211012113.

311210112123 is a `hidden beast` number, since 311 + 210 + 1 + 121 + 23 = 666.

It is not a de Polignac number, because 311210112123 - 2¹ = 311210112121 is a prime.

It is a super-2 number, since 2×311210112123² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 311210112096 and 311210112105.

It is not an unprimeable number, because it can be changed into a prime (311210112121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1515165 + ... + 1708257.

It is an arithmetic number, because the mean of its divisors is an integer number (28816383090).

Almost surely, 2^311210112123 is an apocalyptic number.

311210112123 is a deficient number, since it is larger than the sum of its proper divisors (149852017317).

311210112123 is a wasteful number, since it uses less digits than its factorization.

311210112123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252795 (or 252789 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 311210112123 its reverse (321211012113), we get a palindrome (632421124236).

The spelling of 311210112123 in words is "three hundred eleven billion, two hundred ten million, one hundred twelve thousand, one hundred twenty-three".