23031320321 has 8 divisors (see below), whose sum is σ = 23312016000. Its totient is φ = 22750701232.

The previous prime is 23031320293. The next prime is 23031320341. The reversal of 23031320321 is 12302313032.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23031320321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23031320293 and 23031320302.

It is not an unprimeable number, because it can be changed into a prime (23031320341) 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, 794936 + ... + 823398.

It is an arithmetic number, because the mean of its divisors is an integer number (2914002000).

Almost surely, 2^23031320321 is an apocalyptic number.

It is an amenable number.

23031320321 is a deficient number, since it is larger than the sum of its proper divisors (280695679).

23031320321 is an equidigital number, since it uses as much as digits as its factorization.

23031320321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38295.

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

Adding to 23031320321 its reverse (12302313032), we get a palindrome (35333633353).

The spelling of 23031320321 in words is "twenty-three billion, thirty-one million, three hundred twenty thousand, three hundred twenty-one".