230221243 has 4 divisors (see below), whose sum is σ = 263110000. Its totient is φ = 197332488.

The previous prime is 230221231. The next prime is 230221253. The reversal of 230221243 is 342122032.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-230221243 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 230221243.

It is not an unprimeable number, because it can be changed into a prime (230221223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16444368 + ... + 16444381.

It is an arithmetic number, because the mean of its divisors is an integer number (65777500).

Almost surely, 2^230221243 is an apocalyptic number.

230221243 is a deficient number, since it is larger than the sum of its proper divisors (32888757).

230221243 is an equidigital number, since it uses as much as digits as its factorization.

230221243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32888756.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 230221243 is about 15173.0433005380. The cubic root of 230221243 is about 612.8889595528. Note that the first 3 decimals are identical.

Adding to 230221243 its reverse (342122032), we get a palindrome (572343275).

The spelling of 230221243 in words is "two hundred thirty million, two hundred twenty-one thousand, two hundred forty-three".