211530350 has 48 divisors (see below), whose sum is σ = 410933520. Its totient is φ = 80908800.

The previous prime is 211530349. The next prime is 211530353. The reversal of 211530350 is 53035112.

It is a super-2 number, since 2×211530350² = 89490177942245000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211530353) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 163205 + ... + 164495.

It is an arithmetic number, because the mean of its divisors is an integer number (8561115).

Almost surely, 2^211530350 is an apocalyptic number.

211530350 is a deficient number, since it is larger than the sum of its proper divisors (199403170).

211530350 is a wasteful number, since it uses less digits than its factorization.

211530350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445 (or 1440 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 211530350 is about 14544.0829893122. The cubic root of 211530350 is about 595.8325562229.

Adding to 211530350 its reverse (53035112), we get a palindrome (264565462).

The spelling of 211530350 in words is "two hundred eleven million, five hundred thirty thousand, three hundred fifty".