321085056 has 32 divisors (see below), whose sum is σ = 852883200. Its totient is φ = 107028224.

The previous prime is 321085019. The next prime is 321085097. The reversal of 321085056 is 650580123.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×321085056² = 206191226373046272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417696 + ... + 418463.

It is an arithmetic number, because the mean of its divisors is an integer number (26652600).

Almost surely, 2^321085056 is an apocalyptic number.

It is an amenable number.

321085056 is an abundant number, since it is smaller than the sum of its proper divisors (531798144).

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

321085056 is an equidigital number, since it uses as much as digits as its factorization.

321085056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836176 (or 836164 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 321085056 is about 17918.8463914394. The cubic root of 321085056 is about 684.7625980388.

The spelling of 321085056 in words is "three hundred twenty-one million, eighty-five thousand, fifty-six".