320221401 has 8 divisors (see below), whose sum is σ = 452077344. Its totient is φ = 200923200.

The previous prime is 320221397. The next prime is 320221417. The reversal of 320221401 is 104122023.

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

It is not a de Polignac number, because 320221401 - 2² = 320221397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (320221201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3139375 + ... + 3139476.

It is an arithmetic number, because the mean of its divisors is an integer number (56509668).

Almost surely, 2^320221401 is an apocalyptic number.

It is an amenable number.

320221401 is a deficient number, since it is larger than the sum of its proper divisors (131855943).

320221401 is a wasteful number, since it uses less digits than its factorization.

320221401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6278871.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 320221401 is about 17894.7310960517. The cubic root of 320221401 is about 684.1480882979.

Adding to 320221401 its reverse (104122023), we get a palindrome (424343424).

The spelling of 320221401 in words is "three hundred twenty million, two hundred twenty-one thousand, four hundred one".