211473 has 6 divisors (see below), whose sum is σ = 305474. Its totient is φ = 140976.

The previous prime is 211469. The next prime is 211493. The reversal of 211473 is 374112.

It can be written as a sum of positive squares in only one way, i.e., 199809 + 11664 = 447^2 + 108^2 .

It is not a de Polignac number, because 211473 - 2² = 211469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 211473.

It is not an unprimeable number, because it can be changed into a prime (211403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11740 + ... + 11757.

2²¹¹⁴⁷³ is an apocalyptic number.

It is an amenable number.

211473 is a deficient number, since it is larger than the sum of its proper divisors (94001).

211473 is a wasteful number, since it uses less digits than its factorization.

211473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23503 (or 23500 counting only the distinct ones).

The product of its digits is 168, while the sum is 18.

The square root of 211473 is about 459.8619358025. The cubic root of 211473 is about 59.5778704083.

Adding to 211473 its reverse (374112), we get a palindrome (585585).

It can be divided in two parts, 2114 and 73, that added together give a 7-th power (2187 = 3⁷).

The spelling of 211473 in words is "two hundred eleven thousand, four hundred seventy-three", and thus it is an iban number.