231230321 has 8 divisors (see below), whose sum is σ = 268595904. Its totient is φ = 194947920.

The previous prime is 231230303. The next prime is 231230341. The reversal of 231230321 is 123032132.

231230321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 231230321 - 2¹⁴ = 231213937 is a prime.

It is a super-2 number, since 2×231230321² = 106934922699526082, which contains 22 as substring.

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 231230321.

It is not an unprimeable number, because it can be changed into a prime (231230341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270335 + ... + 271188.

It is an arithmetic number, because the mean of its divisors is an integer number (33574488).

Almost surely, 2^231230321 is an apocalyptic number.

It is an amenable number.

231230321 is a deficient number, since it is larger than the sum of its proper divisors (37365583).

231230321 is an equidigital number, since it uses as much as digits as its factorization.

231230321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541591.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 231230321 is about 15206.2592704452. The cubic root of 231230321 is about 613.7831014594.

Adding to 231230321 its reverse (123032132), we get a palindrome (354262453).

The spelling of 231230321 in words is "two hundred thirty-one million, two hundred thirty thousand, three hundred twenty-one".