213430806 has 12 divisors (see below), whose sum is σ = 462433452. Its totient is φ = 71143596.

The previous prime is 213430771. The next prime is 213430817. The reversal of 213430806 is 608034312.

It is a happy number.

213430806 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 213430806.

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 5 ways as a sum of consecutive naturals, for example, 5928616 + ... + 5928651.

It is an arithmetic number, because the mean of its divisors is an integer number (38536121).

Almost surely, 2^213430806 is an apocalyptic number.

213430806 is an abundant number, since it is smaller than the sum of its proper divisors (249002646).

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

213430806 is a wasteful number, since it uses less digits than its factorization.

213430806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11857275 (or 11857272 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 213430806 is about 14609.2712343909. The cubic root of 213430806 is about 597.6116220328.

The spelling of 213430806 in words is "two hundred thirteen million, four hundred thirty thousand, eight hundred six".