211035423 has 4 divisors (see below), whose sum is σ = 281380568. Its totient is φ = 140690280.

The previous prime is 211035421. The next prime is 211035437. The reversal of 211035423 is 324530112.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 211035423 - 2¹ = 211035421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211035423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211035421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35172568 + ... + 35172573.

It is an arithmetic number, because the mean of its divisors is an integer number (70345142).

Almost surely, 2^211035423 is an apocalyptic number.

211035423 is a deficient number, since it is larger than the sum of its proper divisors (70345145).

211035423 is an equidigital number, since it uses as much as digits as its factorization.

211035423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70345144.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 211035423 is about 14527.0583051077. The cubic root of 211035423 is about 595.3674946515.

Adding to 211035423 its reverse (324530112), we get a palindrome (535565535).

The spelling of 211035423 in words is "two hundred eleven million, thirty-five thousand, four hundred twenty-three".