423340024321 has 2 divisors, whose sum is σ = 423340024322. Its totient is φ = 423340024320.

The previous prime is 423340024319. The next prime is 423340024369. The reversal of 423340024321 is 123420043324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 226704538225 + 196635486096 = 476135^2 + 443436^2 .

It is a cyclic number.

It is not a de Polignac number, because 423340024321 - 2¹ = 423340024319 is a prime.

It is a super-2 number, since 2×423340024321² (a number of 24 digits) contains 22 as substring.

Together with 423340024319, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 423340024321.

It is not a weakly prime, because it can be changed into another prime (423340024721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211670012160 + 211670012161.

It is an arithmetic number, because the mean of its divisors is an integer number (211670012161).

Almost surely, 2^423340024321 is an apocalyptic number.

It is an amenable number.

423340024321 is a deficient number, since it is larger than the sum of its proper divisors (1).

423340024321 is an equidigital number, since it uses as much as digits as its factorization.

423340024321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 423340024321 its reverse (123420043324), we get a palindrome (546760067645).

The spelling of 423340024321 in words is "four hundred twenty-three billion, three hundred forty million, twenty-four thousand, three hundred twenty-one".