211342655 has 16 divisors (see below), whose sum is σ = 264259584. Its totient is φ = 162078240.

The previous prime is 211342627. The next prime is 211342667. The reversal of 211342655 is 556243112.

It is not a de Polignac number, because 211342655 - 2⁶ = 211342591 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 15 ways as a sum of consecutive naturals, for example, 10214 + ... + 22956.

It is an arithmetic number, because the mean of its divisors is an integer number (16516224).

Almost surely, 2^211342655 is an apocalyptic number.

211342655 is a deficient number, since it is larger than the sum of its proper divisors (52916929).

211342655 is a wasteful number, since it uses less digits than its factorization.

211342655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12886.

The product of its digits is 7200, while the sum is 29.

The square root of 211342655 is about 14537.6289332202. The cubic root of 211342655 is about 595.6562727949.

Adding to 211342655 its reverse (556243112), we get a palindrome (767585767).

The spelling of 211342655 in words is "two hundred eleven million, three hundred forty-two thousand, six hundred fifty-five".