213111344123 has 8 divisors (see below), whose sum is σ = 226781215200. Its totient is φ = 199567463040.

The previous prime is 213111344107. The next prime is 213111344137. The reversal of 213111344123 is 321443111312.

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 213111344123 - 2⁴ = 213111344107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213111344092 and 213111344101.

It is not an unprimeable number, because it can be changed into a prime (213111344143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31494008 + ... + 31500773.

It is an arithmetic number, because the mean of its divisors is an integer number (28347651900).

Almost surely, 2^213111344123 is an apocalyptic number.

213111344123 is a deficient number, since it is larger than the sum of its proper divisors (13669871077).

213111344123 is a wasteful number, since it uses less digits than its factorization.

213111344123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62994997.

The product of its digits is 1728, while the sum is 26.

Adding to 213111344123 its reverse (321443111312), we get a palindrome (534554455435).

The spelling of 213111344123 in words is "two hundred thirteen billion, one hundred eleven million, three hundred forty-four thousand, one hundred twenty-three".