211234430 has 32 divisors (see below), whose sum is σ = 418916448. Its totient is φ = 76048000.

The previous prime is 211234423. The next prime is 211234453. The reversal of 211234430 is 34432112.

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 1604 + ... + 20616.

It is an arithmetic number, because the mean of its divisors is an integer number (13091139).

Almost surely, 2^211234430 is an apocalyptic number.

211234430 is a deficient number, since it is larger than the sum of its proper divisors (207682018).

211234430 is a wasteful number, since it uses less digits than its factorization.

211234430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19132.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 211234430 is about 14533.9062195956. The cubic root of 211234430 is about 595.5545802661.

Adding to 211234430 its reverse (34432112), we get a palindrome (245666542).

The spelling of 211234430 in words is "two hundred eleven million, two hundred thirty-four thousand, four hundred thirty".