230221207 has 4 divisors (see below), whose sum is σ = 230252440. Its totient is φ = 230189976.

The previous prime is 230221177. The next prime is 230221219. The reversal of 230221207 is 702122032.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-230221207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230221507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2269 + ... + 21577.

It is an arithmetic number, because the mean of its divisors is an integer number (57563110).

Almost surely, 2^230221207 is an apocalyptic number.

230221207 is a deficient number, since it is larger than the sum of its proper divisors (31233).

230221207 is a wasteful number, since it uses less digits than its factorization.

230221207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31232.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 230221207 is about 15173.0421142235. The cubic root of 230221207 is about 612.8889276067. Note that the first 3 decimals are identical.

Adding to 230221207 its reverse (702122032), we get a palindrome (932343239).

The spelling of 230221207 in words is "two hundred thirty million, two hundred twenty-one thousand, two hundred seven".