321797144 has 8 divisors (see below), whose sum is σ = 603369660. Its totient is φ = 160898568.

The previous prime is 321797123. The next prime is 321797149. The reversal of 321797144 is 441797123.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 321797098 and 321797107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321797149) by changing a digit.

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 as a sum of consecutive naturals, namely, 20112314 + ... + 20112329.

Almost surely, 2^321797144 is an apocalyptic number.

It is an amenable number.

321797144 is a deficient number, since it is larger than the sum of its proper divisors (281572516).

321797144 is a wasteful number, since it uses less digits than its factorization.

321797144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40224649 (or 40224645 counting only the distinct ones).

The product of its digits is 42336, while the sum is 38.

The square root of 321797144 is about 17938.7051929619. The cubic root of 321797144 is about 685.2684361813.

The spelling of 321797144 in words is "three hundred twenty-one million, seven hundred ninety-seven thousand, one hundred forty-four".