211400223 has 8 divisors (see below), whose sum is σ = 288741936. Its totient is φ = 137496000.

The previous prime is 211400183. The next prime is 211400237. The reversal of 211400223 is 322004112.

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

It is not a de Polignac number, because 211400223 - 2⁹ = 211399711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211400723) 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, 859228 + ... + 859473.

It is an arithmetic number, because the mean of its divisors is an integer number (36092742).

Almost surely, 2^211400223 is an apocalyptic number.

211400223 is a deficient number, since it is larger than the sum of its proper divisors (77341713).

211400223 is a wasteful number, since it uses less digits than its factorization.

211400223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1718745.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 211400223 is about 14539.6087636497. The cubic root of 211400223 is about 595.7103518405.

Adding to 211400223 its reverse (322004112), we get a palindrome (533404335).

The spelling of 211400223 in words is "two hundred eleven million, four hundred thousand, two hundred twenty-three".