211033930 has 8 divisors (see below), whose sum is σ = 379861092. Its totient is φ = 84413568.

The previous prime is 211033913. The next prime is 211033943. The reversal of 211033930 is 39330112.

It can be written as a sum of positive squares in 2 ways, for example, as 192293689 + 18740241 = 13867^2 + 4329^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×211033930² = 89070639222489800, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 10551687 + ... + 10551706.

Almost surely, 2^211033930 is an apocalyptic number.

211033930 is a deficient number, since it is larger than the sum of its proper divisors (168827162).

211033930 is a wasteful number, since it uses less digits than its factorization.

211033930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21103400.

The product of its (nonzero) digits is 486, while the sum is 22.

The square root of 211033930 is about 14527.0069181508. The cubic root of 211033930 is about 595.3660906443.

The spelling of 211033930 in words is "two hundred eleven million, thirty-three thousand, nine hundred thirty".