211430364 has 12 divisors (see below), whose sum is σ = 493337544. Its totient is φ = 70476784.

The previous prime is 211430363. The next prime is 211430369. The reversal of 211430364 is 463034112.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211430363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8809587 + ... + 8809610.

It is an arithmetic number, because the mean of its divisors is an integer number (41111462).

Almost surely, 2^211430364 is an apocalyptic number.

It is an amenable number.

211430364 is an abundant number, since it is smaller than the sum of its proper divisors (281907180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211430364 is a wasteful number, since it uses less digits than its factorization.

211430364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17619204 (or 17619202 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 211430364 is about 14540.6452401535. The cubic root of 211430364 is about 595.7386622056.

Adding to 211430364 its reverse (463034112), we get a palindrome (674464476).

The spelling of 211430364 in words is "two hundred eleven million, four hundred thirty thousand, three hundred sixty-four".