211404031441 has 4 divisors (see below), whose sum is σ = 211405259572. Its totient is φ = 211402803312.

The previous prime is 211404031439. The next prime is 211404031453. The reversal of 211404031441 is 144130404112.

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

It can be written as a sum of positive squares in 2 ways, for example, as 60809587216 + 150594444225 = 246596^2 + 388065^2 .

It is a cyclic number.

It is not a de Polignac number, because 211404031441 - 2¹ = 211404031439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211404031841) 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, 303510 + ... + 717583.

It is an arithmetic number, because the mean of its divisors is an integer number (52851314893).

Almost surely, 2^211404031441 is an apocalyptic number.

It is an amenable number.

211404031441 is a deficient number, since it is larger than the sum of its proper divisors (1228131).

211404031441 is a wasteful number, since it uses less digits than its factorization.

211404031441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1228130.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 211404031441 its reverse (144130404112), we get a palindrome (355534435553).

The spelling of 211404031441 in words is "two hundred eleven billion, four hundred four million, thirty-one thousand, four hundred forty-one".