321430342424021 has 8 divisors (see below), whose sum is σ = 340341878642904. Its totient is φ = 302519236096000.

The previous prime is 321430342423999. The next prime is 321430342424029. The reversal of 321430342424021 is 120424243034123.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1296444118225 + 320133898305796 = 1138615^2 + 17892286^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 321430342424021 - 2²⁶ = 321430275315157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321430342424029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105932690 + ... + 108924723.

It is an arithmetic number, because the mean of its divisors is an integer number (42542734830363).

Almost surely, 2^{321430342424021} is an apocalyptic number.

It is an amenable number.

321430342424021 is a deficient number, since it is larger than the sum of its proper divisors (18911536218883).

321430342424021 is a wasteful number, since it uses less digits than its factorization.

321430342424021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214945431.

The product of its (nonzero) digits is 110592, while the sum is 35.

Adding to 321430342424021 its reverse (120424243034123), we get a palindrome (441854585458144).

The spelling of 321430342424021 in words is "three hundred twenty-one trillion, four hundred thirty billion, three hundred forty-two million, four hundred twenty-four thousand, twenty-one".