321231000002 has 16 divisors (see below), whose sum is σ = 526528296000. Its totient is φ = 145770321840.

The previous prime is 321230999993. The next prime is 321231000061. The reversal of 321231000002 is 200000132123.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12174977 + ... + 12201332.

It is an arithmetic number, because the mean of its divisors is an integer number (32908018500).

Almost surely, 2^321231000002 is an apocalyptic number.

321231000002 is a deficient number, since it is larger than the sum of its proper divisors (205297295998).

321231000002 is a wasteful number, since it uses less digits than its factorization.

321231000002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24376921.

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

Adding to 321231000002 its reverse (200000132123), we get a palindrome (521231132125).

The spelling of 321231000002 in words is "three hundred twenty-one billion, two hundred thirty-one million, two", and thus it is an aban number.