213025306 has 8 divisors (see below), whose sum is σ = 344117844. Its totient is φ = 98319360.

The previous prime is 213025297. The next prime is 213025331. The reversal of 213025306 is 603520312.

It can be written as a sum of positive squares in 2 ways, for example, as 185368225 + 27657081 = 13615^2 + 5259^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 4096615 + ... + 4096666.

Almost surely, 2^213025306 is an apocalyptic number.

213025306 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

213025306 is a deficient number, since it is larger than the sum of its proper divisors (131092538).

213025306 is a wasteful number, since it uses less digits than its factorization.

213025306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8193296.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 213025306 is about 14595.3864628519. The cubic root of 213025306 is about 597.2329120282.

Adding to 213025306 its reverse (603520312), we get a palindrome (816545618).

The spelling of 213025306 in words is "two hundred thirteen million, twenty-five thousand, three hundred six".