321220086 has 32 divisors (see below), whose sum is σ = 701716608. Its totient is φ = 97218240.

The previous prime is 321220073. The next prime is 321220087. The reversal of 321220086 is 680022123.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321220087) 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 15 ways as a sum of consecutive naturals, for example, 60345 + ... + 65451.

It is an arithmetic number, because the mean of its divisors is an integer number (21928644).

Almost surely, 2^321220086 is an apocalyptic number.

321220086 is an abundant number, since it is smaller than the sum of its proper divisors (380496522).

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

321220086 is a wasteful number, since it uses less digits than its factorization.

321220086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6076.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 321220086 is about 17922.6138160705. The cubic root of 321220086 is about 684.8585752399.

The spelling of 321220086 in words is "three hundred twenty-one million, two hundred twenty thousand, eighty-six".