321213443424413 has 4 divisors (see below), whose sum is σ = 324215438222880. Its totient is φ = 318211448625948.

The previous prime is 321213443424353. The next prime is 321213443424457. The reversal of 321213443424413 is 314424344312123.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 321213443424413 - 2³⁴ = 321196263555229 is a prime.

It is a super-2 number, since 2×321213443424413² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321213443424473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1500997399073 + ... + 1500997399286.

It is an arithmetic number, because the mean of its divisors is an integer number (81053859555720).

Almost surely, 2^{321213443424413} is an apocalyptic number.

It is an amenable number.

321213443424413 is a deficient number, since it is larger than the sum of its proper divisors (3001994798467).

321213443424413 is a wasteful number, since it uses less digits than its factorization.

321213443424413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3001994798466.

The product of its digits is 663552, while the sum is 41.

Adding to 321213443424413 its reverse (314424344312123), we get a palindrome (635637787736536).

The spelling of 321213443424413 in words is "three hundred twenty-one trillion, two hundred thirteen billion, four hundred forty-three million, four hundred twenty-four thousand, four hundred thirteen".