321232253 has 4 divisors (see below), whose sum is σ = 329067228. Its totient is φ = 313397280.

The previous prime is 321232201. The next prime is 321232271. The reversal of 321232253 is 352232123.

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

It can be written as a sum of positive squares in 2 ways, for example, as 156700324 + 164531929 = 12518^2 + 12827^2 .

It is a cyclic number.

It is not a de Polignac number, because 321232253 - 2⁶ = 321232189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321232273) 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, 3917426 + ... + 3917507.

It is an arithmetic number, because the mean of its divisors is an integer number (82266807).

Almost surely, 2^321232253 is an apocalyptic number.

It is an amenable number.

321232253 is a deficient number, since it is larger than the sum of its proper divisors (7834975).

321232253 is an equidigital number, since it uses as much as digits as its factorization.

321232253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7834974.

The product of its digits is 2160, while the sum is 23.

The square root of 321232253 is about 17922.9532443735. The cubic root of 321232253 is about 684.8672220312.

Adding to 321232253 its reverse (352232123), we get a palindrome (673464376).

The spelling of 321232253 in words is "three hundred twenty-one million, two hundred thirty-two thousand, two hundred fifty-three".