211422343 has 4 divisors (see below), whose sum is σ = 230642568. Its totient is φ = 192202120.

The previous prime is 211422307. The next prime is 211422347. The reversal of 211422343 is 343224112.

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

It is not a de Polignac number, because 211422343 - 2⁹ = 211421831 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211422347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9610096 + ... + 9610117.

It is an arithmetic number, because the mean of its divisors is an integer number (57660642).

Almost surely, 2^211422343 is an apocalyptic number.

211422343 is a deficient number, since it is larger than the sum of its proper divisors (19220225).

211422343 is a wasteful number, since it uses less digits than its factorization.

211422343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19220224.

The product of its digits is 1152, while the sum is 22.

The square root of 211422343 is about 14540.3694244679. The cubic root of 211422343 is about 595.7311286294.

Adding to 211422343 its reverse (343224112), we get a palindrome (554646455).

The spelling of 211422343 in words is "two hundred eleven million, four hundred twenty-two thousand, three hundred forty-three".