321043423 has 2 divisors, whose sum is σ = 321043424. Its totient is φ = 321043422.

The previous prime is 321043421. The next prime is 321043433. The reversal of 321043423 is 324340123.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 321043423 - 2¹ = 321043421 is a prime.

Together with 321043421, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 321043394 and 321043403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321043421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160521711 + 160521712.

It is an arithmetic number, because the mean of its divisors is an integer number (160521712).

Almost surely, 2^321043423 is an apocalyptic number.

321043423 is a deficient number, since it is larger than the sum of its proper divisors (1).

321043423 is an equidigital number, since it uses as much as digits as its factorization.

321043423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 321043423 is about 17917.6846439488. The cubic root of 321043423 is about 684.7330005298.

Adding to 321043423 its reverse (324340123), we get a palindrome (645383546).

The spelling of 321043423 in words is "three hundred twenty-one million, forty-three thousand, four hundred twenty-three".