232530321 has 4 divisors (see below), whose sum is σ = 310040432. Its totient is φ = 155020212.

The previous prime is 232530317. The next prime is 232530343. The reversal of 232530321 is 123035232.

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.

It is not a de Polignac number, because 232530321 - 2² = 232530317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (232530121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38755051 + ... + 38755056.

It is an arithmetic number, because the mean of its divisors is an integer number (77510108).

Almost surely, 2^232530321 is an apocalyptic number.

It is an amenable number.

232530321 is a deficient number, since it is larger than the sum of its proper divisors (77510111).

232530321 is an equidigital number, since it uses as much as digits as its factorization.

232530321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77510110.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 232530321 is about 15248.9449143211. The cubic root of 232530321 is about 614.9312025627.

Adding to 232530321 its reverse (123035232), we get a palindrome (355565553).

The spelling of 232530321 in words is "two hundred thirty-two million, five hundred thirty thousand, three hundred twenty-one".