321231968 has 24 divisors (see below), whose sum is σ = 635969880. Its totient is φ = 159715840.

The previous prime is 321231959. The next prime is 321231997. The reversal of 321231968 is 869132123.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22313 + ... + 33768.

It is an arithmetic number, because the mean of its divisors is an integer number (26498745).

Almost surely, 2^321231968 is an apocalyptic number.

It is an amenable number.

321231968 is a deficient number, since it is larger than the sum of its proper divisors (314737912).

321231968 is a wasteful number, since it uses less digits than its factorization.

321231968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56270 (or 56262 counting only the distinct ones).

The product of its digits is 15552, while the sum is 35.

The square root of 321231968 is about 17922.9452936731. The cubic root of 321231968 is about 684.8670194911.

The spelling of 321231968 in words is "three hundred twenty-one million, two hundred thirty-one thousand, nine hundred sixty-eight".