211404342341 has 4 divisors (see below), whose sum is σ = 211407852492. Its totient is φ = 211400832192.

The previous prime is 211404342269. The next prime is 211404342349. The reversal of 211404342341 is 143243404112.

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 77133397441 + 134270944900 = 277729^2 + 366430^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211404342341 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 (211404342349) 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, 1663130 + ... + 1785723.

It is an arithmetic number, because the mean of its divisors is an integer number (52851963123).

Almost surely, 2^211404342341 is an apocalyptic number.

It is an amenable number.

211404342341 is a deficient number, since it is larger than the sum of its proper divisors (3510151).

211404342341 is an equidigital number, since it uses as much as digits as its factorization.

211404342341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3510150.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 211404342341 its reverse (143243404112), we get a palindrome (354647746453).

The spelling of 211404342341 in words is "two hundred eleven billion, four hundred four million, three hundred forty-two thousand, three hundred forty-one".