321224023 has 2 divisors, whose sum is σ = 321224024. Its totient is φ = 321224022.

The previous prime is 321223997. The next prime is 321224069. The reversal of 321224023 is 320422123.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321224023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321222023) 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 as a sum of consecutive naturals, namely, 160612011 + 160612012.

It is an arithmetic number, because the mean of its divisors is an integer number (160612012).

Almost surely, 2^321224023 is an apocalyptic number.

321224023 is a deficient number, since it is larger than the sum of its proper divisors (1).

321224023 is an equidigital number, since it uses as much as digits as its factorization.

321224023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 321224023 is about 17922.7236490440. The cubic root of 321224023 is about 684.8613731940.

Adding to 321224023 its reverse (320422123), we get a palindrome (641646146).

The spelling of 321224023 in words is "three hundred twenty-one million, two hundred twenty-four thousand, twenty-three".