211422423 has 8 divisors (see below), whose sum is σ = 282798448. Its totient is φ = 140497344.

The previous prime is 211422413. The next prime is 211422427. The reversal of 211422423 is 324224112.

211422423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 211422423 - 2⁶ = 211422359 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211422423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211422427) 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, 111640 + ... + 113517.

It is an arithmetic number, because the mean of its divisors is an integer number (35349806).

Almost surely, 2^211422423 is an apocalyptic number.

211422423 is a deficient number, since it is larger than the sum of its proper divisors (71376025).

211422423 is a wasteful number, since it uses less digits than its factorization.

211422423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225473.

The product of its digits is 768, while the sum is 21.

The square root of 211422423 is about 14540.3721754293. The cubic root of 211422423 is about 595.7312037689.

Adding to 211422423 its reverse (324224112), we get a palindrome (535646535).

The spelling of 211422423 in words is "two hundred eleven million, four hundred twenty-two thousand, four hundred twenty-three".