211430434 has 8 divisors (see below), whose sum is σ = 318352320. Its totient is φ = 105312996.

The previous prime is 211430407. The next prime is 211430449. The reversal of 211430434 is 434034112.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200454 + ... + 201505.

It is an arithmetic number, because the mean of its divisors is an integer number (39794040).

Almost surely, 2^211430434 is an apocalyptic number.

211430434 is a deficient number, since it is larger than the sum of its proper divisors (106921886).

211430434 is a wasteful number, since it uses less digits than its factorization.

211430434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402224.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 211430434 is about 14540.6476471992. The cubic root of 211430434 is about 595.7387279509.

Adding to 211430434 its reverse (434034112), we get a palindrome (645464546).

The spelling of 211430434 in words is "two hundred eleven million, four hundred thirty thousand, four hundred thirty-four".