230220143 has 4 divisors (see below), whose sum is σ = 231900720. Its totient is φ = 228539568.

The previous prime is 230220121. The next prime is 230220149. The reversal of 230220143 is 341022032.

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

It is a cyclic number.

It is not a de Polignac number, because 230220143 - 2⁶ = 230220079 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 (230220149) 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, 840083 + ... + 840356.

It is an arithmetic number, because the mean of its divisors is an integer number (57975180).

Almost surely, 2^230220143 is an apocalyptic number.

230220143 is a deficient number, since it is larger than the sum of its proper divisors (1680577).

230220143 is a wasteful number, since it uses less digits than its factorization.

230220143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1680576.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 230220143 is about 15173.0070519986. The cubic root of 230220143 is about 612.8879834208.

Adding to 230220143 its reverse (341022032), we get a palindrome (571242175).

The spelling of 230220143 in words is "two hundred thirty million, two hundred twenty thousand, one hundred forty-three".