321320002 has 8 divisors (see below), whose sum is σ = 484427196. Its totient is φ = 159844272.

The previous prime is 321319981. The next prime is 321320023. The reversal of 321320002 is 200023123.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (321319981) and next prime (321320023).

It can be written as a sum of positive squares in 2 ways, for example, as 321090561 + 229441 = 17919^2 + 479^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 407373 + ... + 408160.

Almost surely, 2^321320002 is an apocalyptic number.

321320002 is a deficient number, since it is larger than the sum of its proper divisors (163107194).

321320002 is a wasteful number, since it uses less digits than its factorization.

321320002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815732.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 321320002 is about 17925.4010275921. The cubic root of 321320002 is about 684.9295766485.

Adding to 321320002 its reverse (200023123), we get a palindrome (521343125).

The spelling of 321320002 in words is "three hundred twenty-one million, three hundred twenty thousand, two".