321304401 has 20 divisors (see below), whose sum is σ = 523608624. Its totient is φ = 194729400.

The previous prime is 321304397. The next prime is 321304433. The reversal of 321304401 is 104403123.

321304401 is a `hidden beast` number, since 321 + 304 + 40 + 1 = 666.

It is not a de Polignac number, because 321304401 - 2² = 321304397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (321304441) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 179415 + ... + 181196.

Almost surely, 2^321304401 is an apocalyptic number.

It is an amenable number.

321304401 is a deficient number, since it is larger than the sum of its proper divisors (202304223).

321304401 is a wasteful number, since it uses less digits than its factorization.

321304401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360634 (or 360625 counting only the distinct ones).

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

The square root of 321304401 is about 17924.9658577081. The cubic root of 321304401 is about 684.9184913761.

Adding to 321304401 its reverse (104403123), we get a palindrome (425707524).

The spelling of 321304401 in words is "three hundred twenty-one million, three hundred four thousand, four hundred one".