423202043321 has 2 divisors, whose sum is σ = 423202043322. Its totient is φ = 423202043320.

The previous prime is 423202043309. The next prime is 423202043323. The reversal of 423202043321 is 123340202324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 239727744400 + 183474298921 = 489620^2 + 428339^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423202043321 is a prime.

Together with 423202043323, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (423202043323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211601021660 + 211601021661.

It is an arithmetic number, because the mean of its divisors is an integer number (211601021661).

Almost surely, 2^423202043321 is an apocalyptic number.

It is an amenable number.

423202043321 is a deficient number, since it is larger than the sum of its proper divisors (1).

423202043321 is an equidigital number, since it uses as much as digits as its factorization.

423202043321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 423202043321 its reverse (123340202324), we get a palindrome (546542245645).

The spelling of 423202043321 in words is "four hundred twenty-three billion, two hundred two million, forty-three thousand, three hundred twenty-one".