321223401 has 48 divisors (see below), whose sum is σ = 504940800. Its totient is φ = 203793408.

The previous prime is 321223379. The next prime is 321223411. The reversal of 321223401 is 104322123.

321223401 is a `hidden beast` number, since 321 + 2 + 2 + 340 + 1 = 666.

It is not a de Polignac number, because 321223401 - 2⁵ = 321223369 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (321223411) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 556425 + ... + 557001.

It is an arithmetic number, because the mean of its divisors is an integer number (10519600).

Almost surely, 2^321223401 is an apocalyptic number.

It is an amenable number.

321223401 is a deficient number, since it is larger than the sum of its proper divisors (183717399).

321223401 is an equidigital number, since it uses as much as digits as its factorization.

321223401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700 (or 688 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 321223401 is about 17922.7062967622. The cubic root of 321223401 is about 684.8609311515.

Adding to 321223401 its reverse (104322123), we get a palindrome (425545524).

The spelling of 321223401 in words is "three hundred twenty-one million, two hundred twenty-three thousand, four hundred one".