321404234424473 has 2 divisors, whose sum is σ = 321404234424474. Its totient is φ = 321404234424472.

The previous prime is 321404234424373. The next prime is 321404234424491. The reversal of 321404234424473 is 374424432404123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202254958959769 + 119149275464704 = 14221637^2 + 10915552^2 .

It is a cyclic number.

It is not a de Polignac number, because 321404234424473 - 2¹⁸ = 321404234162329 is a prime.

It is a super-3 number, since 3×321404234424473³ (a number of 44 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (321404234424073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160702117212236 + 160702117212237.

It is an arithmetic number, because the mean of its divisors is an integer number (160702117212237).

Almost surely, 2^{321404234424473} is an apocalyptic number.

It is an amenable number.

321404234424473 is a deficient number, since it is larger than the sum of its proper divisors (1).

321404234424473 is an equidigital number, since it uses as much as digits as its factorization.

321404234424473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6193152, while the sum is 47.

Adding to 321404234424473 its reverse (374424432404123), we get a palindrome (695828666828596).

The spelling of 321404234424473 in words is "three hundred twenty-one trillion, four hundred four billion, two hundred thirty-four million, four hundred twenty-four thousand, four hundred seventy-three".