213166230 has 128 divisors (see below), whose sum is σ = 568995840. Its totient is φ = 50872320.

The previous prime is 213166229. The next prime is 213166237. The reversal of 213166230 is 32661312.

It is a happy number.

It is a super-2 number, since 2×213166230² = 90879683224825800, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 213166230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213166237) 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 63 ways as a sum of consecutive naturals, for example, 1533501 + ... + 1533639.

It is an arithmetic number, because the mean of its divisors is an integer number (4445280).

Almost surely, 2^213166230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213166230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284497920).

213166230 is an abundant number, since it is smaller than the sum of its proper divisors (355829610).

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

213166230 is a wasteful number, since it uses less digits than its factorization.

213166230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 213166230 is about 14600.2133546055. The cubic root of 213166230 is about 597.3645801072.

The spelling of 213166230 in words is "two hundred thirteen million, one hundred sixty-six thousand, two hundred thirty".