211300423 has 4 divisors (see below), whose sum is σ = 211435488. Its totient is φ = 211165360.

The previous prime is 211300421. The next prime is 211300447. The reversal of 211300423 is 324003112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 211300423 - 2¹ = 211300421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211300397 and 211300406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211300421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65158 + ... + 68323.

It is an arithmetic number, because the mean of its divisors is an integer number (52858872).

Almost surely, 2^211300423 is an apocalyptic number.

211300423 is a deficient number, since it is larger than the sum of its proper divisors (135065).

211300423 is a wasteful number, since it uses less digits than its factorization.

211300423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135064.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 211300423 is about 14536.1763541861. The cubic root of 211300423 is about 595.6165940537.

Adding to 211300423 its reverse (324003112), we get a palindrome (535303535).

The spelling of 211300423 in words is "two hundred eleven million, three hundred thousand, four hundred twenty-three".