23020040321 has 2 divisors, whose sum is σ = 23020040322. Its totient is φ = 23020040320.

The previous prime is 23020040317. The next prime is 23020040327. The reversal of 23020040321 is 12304002032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17984151025 + 5035889296 = 134105^2 + 70964^2 .

It is a cyclic number.

It is not a de Polignac number, because 23020040321 - 2² = 23020040317 is a prime.

It is a Sophie Germain prime.

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 23020040321.

It is not a weakly prime, because it can be changed into another prime (23020040327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11510020160 + 11510020161.

It is an arithmetic number, because the mean of its divisors is an integer number (11510020161).

Almost surely, 2^23020040321 is an apocalyptic number.

It is an amenable number.

23020040321 is a deficient number, since it is larger than the sum of its proper divisors (1).

23020040321 is an equidigital number, since it uses as much as digits as its factorization.

23020040321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 23020040321 its reverse (12304002032), we get a palindrome (35324042353).

The spelling of 23020040321 in words is "twenty-three billion, twenty million, forty thousand, three hundred twenty-one".