3201320021 has 8 divisors (see below), whose sum is σ = 3341534784. Its totient is φ = 3061190880.

The previous prime is 3201320011. The next prime is 3201320039. The reversal of 3201320021 is 1200231023.

It is a happy number.

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-3201320021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3201319978 and 3201320005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3201320011) 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, 61961 + ... + 101201.

It is an arithmetic number, because the mean of its divisors is an integer number (417691848).

Almost surely, 2^3201320021 is an apocalyptic number.

It is an amenable number.

3201320021 is a deficient number, since it is larger than the sum of its proper divisors (140214763).

3201320021 is a wasteful number, since it uses less digits than its factorization.

3201320021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42811.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 3201320021 is about 56580.2087394523. The cubic root of 3201320021 is about 1473.8151965571.

Adding to 3201320021 its reverse (1200231023), we get a palindrome (4401551044).

The spelling of 3201320021 in words is "three billion, two hundred one million, three hundred twenty thousand, twenty-one".