211203321423 has 16 divisors (see below), whose sum is σ = 282521675520. Its totient is φ = 140344337216.

The previous prime is 211203321341. The next prime is 211203321431. The reversal of 211203321423 is 324123302112.

It is a cyclic number.

It is not a de Polignac number, because 211203321423 - 2⁸ = 211203321167 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211203321393 and 211203321402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211203321463) 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, 1046683 + ... + 1232051.

It is an arithmetic number, because the mean of its divisors is an integer number (17657604720).

Almost surely, 2^211203321423 is an apocalyptic number.

211203321423 is a deficient number, since it is larger than the sum of its proper divisors (71318354097).

211203321423 is a wasteful number, since it uses less digits than its factorization.

211203321423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186606.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 211203321423 its reverse (324123302112), we get a palindrome (535326623535).

The spelling of 211203321423 in words is "two hundred eleven billion, two hundred three million, three hundred twenty-one thousand, four hundred twenty-three".