211310312123 has 8 divisors (see below), whose sum is σ = 219818091600. Its totient is φ = 202883947168.

The previous prime is 211310312117. The next prime is 211310312141. The reversal of 211310312123 is 321213013112.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211310312123 - 2⁴ = 211310312107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211310312095 and 211310312104.

It is not an unprimeable number, because it can be changed into a prime (211313312123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20348336 + ... + 20358717.

It is an arithmetic number, because the mean of its divisors is an integer number (27477261450).

Almost surely, 2^211310312123 is an apocalyptic number.

211310312123 is a deficient number, since it is larger than the sum of its proper divisors (8507779477).

211310312123 is a wasteful number, since it uses less digits than its factorization.

211310312123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40707261.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 211310312123 its reverse (321213013112), we get a palindrome (532523325235).

The spelling of 211310312123 in words is "two hundred eleven billion, three hundred ten million, three hundred twelve thousand, one hundred twenty-three".