211342135 has 4 divisors (see below), whose sum is σ = 253610568. Its totient is φ = 169073704.

The previous prime is 211342129. The next prime is 211342207. The reversal of 211342135 is 531243112.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 211342135 - 2⁹ = 211341623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21134209 + ... + 21134218.

It is an arithmetic number, because the mean of its divisors is an integer number (63402642).

Almost surely, 2^211342135 is an apocalyptic number.

211342135 is a deficient number, since it is larger than the sum of its proper divisors (42268433).

211342135 is an equidigital number, since it uses as much as digits as its factorization.

211342135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42268432.

The product of its digits is 720, while the sum is 22.

The square root of 211342135 is about 14537.6110485870. The cubic root of 211342135 is about 595.6557842651.

Adding to 211342135 its reverse (531243112), we get a palindrome (742585247).

The spelling of 211342135 in words is "two hundred eleven million, three hundred forty-two thousand, one hundred thirty-five".