321440401 has 8 divisors (see below), whose sum is σ = 325310400. Its totient is φ = 317593872.

The previous prime is 321440393. The next prime is 321440411. The reversal of 321440401 is 104044123.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 321440401 - 2³ = 321440393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321440411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22500 + ... + 33898.

It is an arithmetic number, because the mean of its divisors is an integer number (40663800).

Almost surely, 2^321440401 is an apocalyptic number.

It is an amenable number.

321440401 is a deficient number, since it is larger than the sum of its proper divisors (3869999).

321440401 is a wasteful number, since it uses less digits than its factorization.

321440401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11735.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 321440401 is about 17928.7590479654. The cubic root of 321440401 is about 685.0151139507.

Adding to 321440401 its reverse (104044123), we get a palindrome (425484524).

The spelling of 321440401 in words is "three hundred twenty-one million, four hundred forty thousand, four hundred one".