320321440421 has 8 divisors (see below), whose sum is σ = 331607295744. Its totient is φ = 309095141760.

The previous prime is 320321440349. The next prime is 320321440423. The reversal of 320321440421 is 124044123023.

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 320321440421 - 2²⁶ = 320254331557 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 (320321440423) 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 7 ways as a sum of consecutive naturals, for example, 14878220 + ... + 14899733.

It is an arithmetic number, because the mean of its divisors is an integer number (41450911968).

Almost surely, 2^320321440421 is an apocalyptic number.

320321440421 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

320321440421 is a deficient number, since it is larger than the sum of its proper divisors (11285855323).

320321440421 is a wasteful number, since it uses less digits than its factorization.

320321440421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29778331.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 320321440421 its reverse (124044123023), we get a palindrome (444365563444).

The spelling of 320321440421 in words is "three hundred twenty billion, three hundred twenty-one million, four hundred forty thousand, four hundred twenty-one".