211170030 has 16 divisors (see below), whose sum is σ = 506808144. Its totient is φ = 56312000.

The previous prime is 211170023. The next prime is 211170031. The reversal of 211170030 is 30071112.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 211169991 and 211170009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211170031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3519471 + ... + 3519530.

It is an arithmetic number, because the mean of its divisors is an integer number (31675509).

Almost surely, 2^211170030 is an apocalyptic number.

211170030 is an abundant number, since it is smaller than the sum of its proper divisors (295638114).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211170030 is a wasteful number, since it uses less digits than its factorization.

211170030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7039011.

The product of its (nonzero) digits is 42, while the sum is 15.

The square root of 211170030 is about 14531.6905417092. The cubic root of 211170030 is about 595.4940509712.

The spelling of 211170030 in words is "two hundred eleven million, one hundred seventy thousand, thirty".