211423233 has 16 divisors (see below), whose sum is σ = 323277696. Its totient is φ = 120397440.

The previous prime is 211423229. The next prime is 211423243. The reversal of 211423233 is 332324112.

It is not a de Polignac number, because 211423233 - 2² = 211423229 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (211423213) 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, 11028 + ... + 23333.

It is an arithmetic number, because the mean of its divisors is an integer number (20204856).

Almost surely, 2^211423233 is an apocalyptic number.

It is an amenable number.

211423233 is a deficient number, since it is larger than the sum of its proper divisors (111854463).

211423233 is a wasteful number, since it uses less digits than its factorization.

211423233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34664.

The product of its digits is 864, while the sum is 21.

The square root of 211423233 is about 14540.4000288850. The cubic root of 211423233 is about 595.7319645549.

Adding to 211423233 its reverse (332324112), we get a palindrome (543747345).

The spelling of 211423233 in words is "two hundred eleven million, four hundred twenty-three thousand, two hundred thirty-three".