320405401312001 has 4 divisors (see below), whose sum is σ = 320405490510000. Its totient is φ = 320405312114004.

The previous prime is 320405401311953. The next prime is 320405401312021. The reversal of 320405401312001 is 100213104504023.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 320405401312001 - 2⁴² = 316007354800897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320405401312021) 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 in 3 ways as a sum of consecutive naturals, for example, 38974451 + ... + 46473848.

It is an arithmetic number, because the mean of its divisors is an integer number (80101372627500).

Almost surely, 2^{320405401312001} is an apocalyptic number.

It is an amenable number.

320405401312001 is a deficient number, since it is larger than the sum of its proper divisors (89197999).

320405401312001 is an equidigital number, since it uses as much as digits as its factorization.

320405401312001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89197998.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 320405401312001 its reverse (100213104504023), we get a palindrome (420618505816024).

The spelling of 320405401312001 in words is "three hundred twenty trillion, four hundred five billion, four hundred one million, three hundred twelve thousand, one".