211144003423 has 4 divisors (see below), whose sum is σ = 216054329128. Its totient is φ = 206233677720.

The previous prime is 211144003409. The next prime is 211144003439. The reversal of 211144003423 is 324300441112.

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

It is not a de Polignac number, because 211144003423 - 2³³ = 202554068831 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 (211144003723) 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, 2455162788 + ... + 2455162873.

It is an arithmetic number, because the mean of its divisors is an integer number (54013582282).

Almost surely, 2^211144003423 is an apocalyptic number.

211144003423 is a deficient number, since it is larger than the sum of its proper divisors (4910325705).

211144003423 is an equidigital number, since it uses as much as digits as its factorization.

211144003423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4910325704.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 211144003423 its reverse (324300441112), we get a palindrome (535444444535).

The spelling of 211144003423 in words is "two hundred eleven billion, one hundred forty-four million, three thousand, four hundred twenty-three".