211140453 has 4 divisors (see below), whose sum is σ = 281520608. Its totient is φ = 140760300.

The previous prime is 211140451. The next prime is 211140469. The reversal of 211140453 is 354041112.

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 not a de Polignac number, because 211140453 - 2¹ = 211140451 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211140451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35190073 + ... + 35190078.

It is an arithmetic number, because the mean of its divisors is an integer number (70380152).

Almost surely, 2^211140453 is an apocalyptic number.

It is an amenable number.

211140453 is a deficient number, since it is larger than the sum of its proper divisors (70380155).

211140453 is an equidigital number, since it uses as much as digits as its factorization.

211140453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70380154.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 211140453 is about 14530.6728336991. The cubic root of 211140453 is about 595.4662475468.

Adding to 211140453 its reverse (354041112), we get a palindrome (565181565).

The spelling of 211140453 in words is "two hundred eleven million, one hundred forty thousand, four hundred fifty-three".