321299985 has 16 divisors (see below), whose sum is σ = 526619520. Its totient is φ = 167180160.

The previous prime is 321299977. The next prime is 321300011. The reversal of 321299985 is 589992123.

It is not a de Polignac number, because 321299985 - 2³ = 321299977 is a prime.

It is a super-2 number, since 2×321299985² = 206467360722000450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 260605 + ... + 261834.

It is an arithmetic number, because the mean of its divisors is an integer number (32913720).

Almost surely, 2^321299985 is an apocalyptic number.

It is an amenable number.

321299985 is a deficient number, since it is larger than the sum of its proper divisors (205319535).

321299985 is a wasteful number, since it uses less digits than its factorization.

321299985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522488.

The product of its digits is 349920, while the sum is 48.

The square root of 321299985 is about 17924.8426771339. The cubic root of 321299985 is about 684.9153535273.

The spelling of 321299985 in words is "three hundred twenty-one million, two hundred ninety-nine thousand, nine hundred eighty-five".