320620361021 has 8 divisors (see below), whose sum is σ = 331085664000. Its totient is φ = 310162727520.

The previous prime is 320620360987. The next prime is 320620361071. The reversal of 320620361021 is 120163026023.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320620361021 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 (320620361071) 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, 1832336 + ... + 1999673.

It is an arithmetic number, because the mean of its divisors is an integer number (41385708000).

Almost surely, 2^320620361021 is an apocalyptic number.

320620361021 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

320620361021 is a deficient number, since it is larger than the sum of its proper divisors (10465302979).

320620361021 is a wasteful number, since it uses less digits than its factorization.

320620361021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3834739.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 320620361021 its reverse (120163026023), we get a palindrome (440783387044).

The spelling of 320620361021 in words is "three hundred twenty billion, six hundred twenty million, three hundred sixty-one thousand, twenty-one".