321132020 has 24 divisors (see below), whose sum is σ = 735684768. Its totient is φ = 116775200.

The previous prime is 321132013. The next prime is 321132047. The reversal of 321132020 is 20231123.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 321131986 and 321132004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 729626 + ... + 730065.

It is an arithmetic number, because the mean of its divisors is an integer number (30653532).

Almost surely, 2^321132020 is an apocalyptic number.

It is an amenable number.

321132020 is an abundant number, since it is smaller than the sum of its proper divisors (414552748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

321132020 is a wasteful number, since it uses less digits than its factorization.

321132020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1459711 (or 1459709 counting only the distinct ones).

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

The square root of 321132020 is about 17920.1568073496. The cubic root of 321132020 is about 684.7959823630.

Adding to 321132020 its reverse (20231123), we get a palindrome (341363143).

The spelling of 321132020 in words is "three hundred twenty-one million, one hundred thirty-two thousand, twenty".