211140430 has 8 divisors (see below), whose sum is σ = 380052792. Its totient is φ = 84456168.

The previous prime is 211140343. The next prime is 211140451. The reversal of 211140430 is 34041112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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, 10557012 + ... + 10557031.

It is an arithmetic number, because the mean of its divisors is an integer number (47506599).

Almost surely, 2^211140430 is an apocalyptic number.

211140430 is a deficient number, since it is larger than the sum of its proper divisors (168912362).

211140430 is a wasteful number, since it uses less digits than its factorization.

211140430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21114050.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 211140430 is about 14530.6720422698. The cubic root of 211140430 is about 595.4662259250.

Adding to 211140430 its reverse (34041112), we get a palindrome (245181542).

The spelling of 211140430 in words is "two hundred eleven million, one hundred forty thousand, four hundred thirty".