211430452 has 12 divisors (see below), whose sum is σ = 370181476. Its totient is φ = 105664320.

The previous prime is 211430449. The next prime is 211430459. The reversal of 211430452 is 254034112.

It can be written as a sum of positive squares in 2 ways, for example, as 47692836 + 163737616 = 6906^2 + 12796^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211430459) 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, 2463 + ... + 20710.

Almost surely, 2^211430452 is an apocalyptic number.

It is an amenable number.

211430452 is a deficient number, since it is larger than the sum of its proper divisors (158751024).

211430452 is a wasteful number, since it uses less digits than its factorization.

211430452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25458 (or 25456 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 211430452 is about 14540.6482661537. The cubic root of 211430452 is about 595.7387448569.

Adding to 211430452 its reverse (254034112), we get a palindrome (465464564).

The spelling of 211430452 in words is "two hundred eleven million, four hundred thirty thousand, four hundred fifty-two".