321713985 has 16 divisors (see below), whose sum is σ = 541834560. Its totient is φ = 162550080.

The previous prime is 321713981. The next prime is 321713999. The reversal of 321713985 is 589317123.

It is not a de Polignac number, because 321713985 - 2² = 321713981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (321713981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 564126 + ... + 564695.

It is an arithmetic number, because the mean of its divisors is an integer number (33864660).

Almost surely, 2^321713985 is an apocalyptic number.

It is an amenable number.

321713985 is a deficient number, since it is larger than the sum of its proper divisors (220120575).

321713985 is a wasteful number, since it uses less digits than its factorization.

321713985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128848.

The product of its digits is 45360, while the sum is 39.

The square root of 321713985 is about 17936.3871780245. The cubic root of 321713985 is about 685.2094019435.

The spelling of 321713985 in words is "three hundred twenty-one million, seven hundred thirteen thousand, nine hundred eighty-five".