20313230321 has 8 divisors (see below), whose sum is σ = 21203363520. Its totient is φ = 19423676272.

The previous prime is 20313230309. The next prime is 20313230369. The reversal of 20313230321 is 12303231302.

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

It is a de Polignac number, because none of the positive numbers 2^k-20313230321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20313230293 and 20313230302.

It is not an unprimeable number, because it can be changed into a prime (20313230921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72326 + ... + 214143.

It is an arithmetic number, because the mean of its divisors is an integer number (2650420440).

Almost surely, 2^20313230321 is an apocalyptic number.

It is an amenable number.

20313230321 is a deficient number, since it is larger than the sum of its proper divisors (890133199).

20313230321 is a wasteful number, since it uses less digits than its factorization.

20313230321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289575.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20313230321 its reverse (12303231302), we get a palindrome (32616461623).

The spelling of 20313230321 in words is "twenty billion, three hundred thirteen million, two hundred thirty thousand, three hundred twenty-one".