211930334 has 16 divisors (see below), whose sum is σ = 396337536. Its totient is φ = 82570200.

The previous prime is 211930297. The next prime is 211930337. The reversal of 211930334 is 433039112.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211930337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 687932 + ... + 688239.

It is an arithmetic number, because the mean of its divisors is an integer number (24771096).

Almost surely, 2^211930334 is an apocalyptic number.

211930334 is a deficient number, since it is larger than the sum of its proper divisors (184407202).

211930334 is a wasteful number, since it uses less digits than its factorization.

211930334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376191.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 211930334 is about 14557.8272417281. The cubic root of 211930334 is about 596.2078742029.

Adding to 211930334 its reverse (433039112), we get a palindrome (644969446).

The spelling of 211930334 in words is "two hundred eleven million, nine hundred thirty thousand, three hundred thirty-four".