23443120321 has 2 divisors, whose sum is σ = 23443120322. Its totient is φ = 23443120320.

The previous prime is 23443120313. The next prime is 23443120331. The reversal of 23443120321 is 12302134432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19338796096 + 4104324225 = 139064^2 + 64065^2 .

It is a cyclic number.

It is not a de Polignac number, because 23443120321 - 2³ = 23443120313 is a prime.

It is not a weakly prime, because it can be changed into another prime (23443120301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11721560160 + 11721560161.

It is an arithmetic number, because the mean of its divisors is an integer number (11721560161).

Almost surely, 2^23443120321 is an apocalyptic number.

It is an amenable number.

23443120321 is a deficient number, since it is larger than the sum of its proper divisors (1).

23443120321 is an equidigital number, since it uses as much as digits as its factorization.

23443120321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 23443120321 its reverse (12302134432), we get a palindrome (35745254753).

The spelling of 23443120321 in words is "twenty-three billion, four hundred forty-three million, one hundred twenty thousand, three hundred twenty-one".