211400213 has 4 divisors (see below), whose sum is σ = 222526560. Its totient is φ = 200273868.

The previous prime is 211400183. The next prime is 211400237. The reversal of 211400213 is 312004112.

211400213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 211400213 - 2⁶ = 211400149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211400113) 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, 5563145 + ... + 5563182.

It is an arithmetic number, because the mean of its divisors is an integer number (55631640).

Almost surely, 2^211400213 is an apocalyptic number.

It is an amenable number.

211400213 is a deficient number, since it is larger than the sum of its proper divisors (11126347).

211400213 is a wasteful number, since it uses less digits than its factorization.

211400213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11126346.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 211400213 is about 14539.6084197615. The cubic root of 211400213 is about 595.7103424474.

Adding to 211400213 its reverse (312004112), we get a palindrome (523404325).

The spelling of 211400213 in words is "two hundred eleven million, four hundred thousand, two hundred thirteen".