230573821 has 4 divisors (see below), whose sum is σ = 230604192. Its totient is φ = 230543452.

The previous prime is 230573807. The next prime is 230573831. The reversal of 230573821 is 128375032.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 230573821 - 2⁵ = 230573789 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 (230573801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7440 + ... + 22726.

It is an arithmetic number, because the mean of its divisors is an integer number (57651048).

Almost surely, 2^230573821 is an apocalyptic number.

It is an amenable number.

230573821 is a deficient number, since it is larger than the sum of its proper divisors (30371).

230573821 is a wasteful number, since it uses less digits than its factorization.

230573821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30370.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 230573821 is about 15184.6574212262. The cubic root of 230573821 is about 613.2016746058.

The spelling of 230573821 in words is "two hundred thirty million, five hundred seventy-three thousand, eight hundred twenty-one".