23043021320321 has 4 divisors (see below), whose sum is σ = 23043073119444. Its totient is φ = 23042969521200.

The previous prime is 23043021320311. The next prime is 23043021320329. The reversal of 23043021320321 is 12302312034032.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14065207630321 + 8977813690000 = 3750361^2 + 2996300^2 .

It is a cyclic number.

It is not a de Polignac number, because 23043021320321 - 2³⁰ = 23041947578497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23043021320329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25226450 + ... + 26123931.

It is an arithmetic number, because the mean of its divisors is an integer number (5760768279861).

Almost surely, 2^{23043021320321} is an apocalyptic number.

It is an amenable number.

23043021320321 is a deficient number, since it is larger than the sum of its proper divisors (51799123).

23043021320321 is an equidigital number, since it uses as much as digits as its factorization.

23043021320321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51799122.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 23043021320321 its reverse (12302312034032), we get a palindrome (35345333354353).

The spelling of 23043021320321 in words is "twenty-three trillion, forty-three billion, twenty-one million, three hundred twenty thousand, three hundred twenty-one".