213550306 has 8 divisors (see below), whose sum is σ = 325106640. Its totient is φ = 105181428.

The previous prime is 213550297. The next prime is 213550307. The reversal of 213550306 is 603055312.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (213550307) 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 3 ways as a sum of consecutive naturals, for example, 796696 + ... + 796963.

It is an arithmetic number, because the mean of its divisors is an integer number (40638330).

Almost surely, 2^213550306 is an apocalyptic number.

213550306 is a deficient number, since it is larger than the sum of its proper divisors (111556334).

213550306 is a wasteful number, since it uses less digits than its factorization.

213550306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1593728.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 213550306 is about 14613.3605306925. The cubic root of 213550306 is about 597.7231355579.

It can be divided in two parts, 2135 and 50306, that added together give a square (52441 = 229²).

The spelling of 213550306 in words is "two hundred thirteen million, five hundred fifty thousand, three hundred six".