211690030 has 16 divisors (see below), whose sum is σ = 381898800. Its totient is φ = 84485632.

The previous prime is 211690027. The next prime is 211690043. The reversal of 211690030 is 30096112.

It is a junction number, because it is equal to n+sod(n) for n = 211689983 and 211690010.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 19084 + ... + 28063.

It is an arithmetic number, because the mean of its divisors is an integer number (23868675).

Almost surely, 2^211690030 is an apocalyptic number.

211690030 is a deficient number, since it is larger than the sum of its proper divisors (170208770).

211690030 is a wasteful number, since it uses less digits than its factorization.

211690030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47603.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 211690030 is about 14549.5714713527. The cubic root of 211690030 is about 595.9824458443.

The spelling of 211690030 in words is "two hundred eleven million, six hundred ninety thousand, thirty".