232220321 has 4 divisors (see below), whose sum is σ = 233103552. Its totient is φ = 231337092.

The previous prime is 232220293. The next prime is 232220327. The reversal of 232220321 is 123022232.

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 a cyclic number.

It is not a de Polignac number, because 232220321 - 2⁶ = 232220257 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 232220321.

It is not an unprimeable number, because it can be changed into a prime (232220327) 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, 441221 + ... + 441746.

It is an arithmetic number, because the mean of its divisors is an integer number (58275888).

Almost surely, 2^232220321 is an apocalyptic number.

It is an amenable number.

232220321 is a deficient number, since it is larger than the sum of its proper divisors (883231).

232220321 is an equidigital number, since it uses as much as digits as its factorization.

232220321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883230.

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

The square root of 232220321 is about 15238.7768866140. The cubic root of 232220321 is about 614.6578139173.

Adding to 232220321 its reverse (123022232), we get a palindrome (355242553).

The spelling of 232220321 in words is "two hundred thirty-two million, two hundred twenty thousand, three hundred twenty-one".