320340430403021 has 8 divisors (see below), whose sum is σ = 366103755786624. Its totient is φ = 274577206708080.

The previous prime is 320340430402901. The next prime is 320340430403039. The reversal of 320340430403021 is 120304034043023.

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 320340430403021 - 2²⁶ = 320340363294157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320340430402021) 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, 18547790 + ... + 31379951.

It is an arithmetic number, because the mean of its divisors is an integer number (45762969473328).

Almost surely, 2^{320340430403021} is an apocalyptic number.

It is an amenable number.

320340430403021 is a deficient number, since it is larger than the sum of its proper divisors (45763325383603).

320340430403021 is an equidigital number, since it uses as much as digits as its factorization.

320340430403021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50844331.

The product of its (nonzero) digits is 20736, while the sum is 29.

Adding to 320340430403021 its reverse (120304034043023), we get a palindrome (440644464446044).

The spelling of 320340430403021 in words is "three hundred twenty trillion, three hundred forty billion, four hundred thirty million, four hundred three thousand, twenty-one".