320132021 has 8 divisors (see below), whose sum is σ = 353160000. Its totient is φ = 287758240.

The previous prime is 320132011. The next prime is 320132023. The reversal of 320132021 is 120231023.

It is a happy number.

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

It is not a de Polignac number, because 320132021 - 2¹⁸ = 319869877 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 320131987 and 320132005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320132023) 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, 162521 + ... + 164478.

It is an arithmetic number, because the mean of its divisors is an integer number (44145000).

Almost surely, 2^320132021 is an apocalyptic number.

It is an amenable number.

320132021 is a deficient number, since it is larger than the sum of its proper divisors (33027979).

320132021 is a wasteful number, since it uses less digits than its factorization.

320132021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327099.

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

The square root of 320132021 is about 17892.2335386055. The cubic root of 320132021 is about 684.0844293772.

Adding to 320132021 its reverse (120231023), we get a palindrome (440363044).

The spelling of 320132021 in words is "three hundred twenty million, one hundred thirty-two thousand, twenty-one".