211043864 has 16 divisors (see below), whose sum is σ = 397920600. Its totient is φ = 104931712.

The previous prime is 211043863. The next prime is 211043869. The reversal of 211043864 is 468340112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211043863) 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, 72257 + ... + 75120.

Almost surely, 2^211043864 is an apocalyptic number.

It is an amenable number.

211043864 is a deficient number, since it is larger than the sum of its proper divisors (186876736).

211043864 is a wasteful number, since it uses less digits than its factorization.

211043864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147562 (or 147558 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 211043864 is about 14527.3488290190. The cubic root of 211043864 is about 595.3754323869.

Adding to 211043864 its reverse (468340112), we get a palindrome (679383976).

The spelling of 211043864 in words is "two hundred eleven million, forty-three thousand, eight hundred sixty-four".