211503164 has 24 divisors (see below), whose sum is σ = 375347280. Its totient is φ = 104270976.

The previous prime is 211503161. The next prime is 211503167. The reversal of 211503164 is 461305112.

It is an interprime number because it is at equal distance from previous prime (211503161) and next prime (211503167).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211503161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97904 + ... + 100040.

It is an arithmetic number, because the mean of its divisors is an integer number (15639470).

Almost surely, 2^211503164 is an apocalyptic number.

It is an amenable number.

211503164 is a deficient number, since it is larger than the sum of its proper divisors (163844116).

211503164 is a wasteful number, since it uses less digits than its factorization.

211503164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2477 (or 2475 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 211503164 is about 14543.1483524029. The cubic root of 211503164 is about 595.8070295504.

Adding to 211503164 its reverse (461305112), we get a palindrome (672808276).

The spelling of 211503164 in words is "two hundred eleven million, five hundred three thousand, one hundred sixty-four".