321312002 has 64 divisors (see below), whose sum is σ = 593049600. Its totient is φ = 128666880.

The previous prime is 321311999. The next prime is 321312011. The reversal of 321312002 is 200213123.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 731699 + ... + 732137.

It is an arithmetic number, because the mean of its divisors is an integer number (9266400).

Almost surely, 2^321312002 is an apocalyptic number.

321312002 is a deficient number, since it is larger than the sum of its proper divisors (271737598).

321312002 is a wasteful number, since it uses less digits than its factorization.

321312002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591.

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

The square root of 321312002 is about 17925.1778791732. The cubic root of 321312002 is about 684.9238923026.

Adding to 321312002 its reverse (200213123), we get a palindrome (521525125).

The spelling of 321312002 in words is "three hundred twenty-one million, three hundred twelve thousand, two".