2031230321 has 8 divisors (see below), whose sum is σ = 2138632320. Its totient is φ = 1923877872.

The previous prime is 2031230317. The next prime is 2031230381. The reversal of 2031230321 is 1230321302.

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

It is a cyclic number.

It is not a de Polignac number, because 2031230321 - 2² = 2031230317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2031230321.

It is not an unprimeable number, because it can be changed into a prime (2031230381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96296 + ... + 115478.

It is an arithmetic number, because the mean of its divisors is an integer number (267329040).

Almost surely, 2^2031230321 is an apocalyptic number.

It is an amenable number.

2031230321 is a deficient number, since it is larger than the sum of its proper divisors (107401999).

2031230321 is a wasteful number, since it uses less digits than its factorization.

2031230321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24775.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 2031230321 is about 45069.1726238679. The cubic root of 2031230321 is about 1266.4451649233.

Adding to 2031230321 its reverse (1230321302), we get a palindrome (3261551623).

The spelling of 2031230321 in words is "two billion, thirty-one million, two hundred thirty thousand, three hundred twenty-one".