211425306 has 16 divisors (see below), whose sum is σ = 425545824. Its totient is φ = 70025904.

The previous prime is 211425271. The next prime is 211425323. The reversal of 211425306 is 603524112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111280 + ... + 113163.

It is an arithmetic number, because the mean of its divisors is an integer number (26596614).

Almost surely, 2^211425306 is an apocalyptic number.

211425306 is an abundant number, since it is smaller than the sum of its proper divisors (214120518).

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

211425306 is a wasteful number, since it uses less digits than its factorization.

211425306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224605.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 211425306 is about 14540.4713128564. The cubic root of 211425306 is about 595.7339115946.

Adding to 211425306 its reverse (603524112), we get a palindrome (814949418).

The spelling of 211425306 in words is "two hundred eleven million, four hundred twenty-five thousand, three hundred six".