321430034323021 has 4 divisors (see below), whose sum is σ = 346155421578652. Its totient is φ = 296704647067392.

The previous prime is 321430034322989. The next prime is 321430034323037. The reversal of 321430034323021 is 120323430034123.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 84382779720100 + 237047254602921 = 9186010^2 + 15396339^2 .

It is a cyclic number.

It is not a de Polignac number, because 321430034323021 - 2⁵ = 321430034322989 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 (321430034323091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12362693627796 + ... + 12362693627821.

It is an arithmetic number, because the mean of its divisors is an integer number (86538855394663).

Almost surely, 2^{321430034323021} is an apocalyptic number.

It is an amenable number.

321430034323021 is a deficient number, since it is larger than the sum of its proper divisors (24725387255631).

321430034323021 is a wasteful number, since it uses less digits than its factorization.

321430034323021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24725387255630.

The product of its (nonzero) digits is 31104, while the sum is 31.

Adding to 321430034323021 its reverse (120323430034123), we get a palindrome (441753464357144).

The spelling of 321430034323021 in words is "three hundred twenty-one trillion, four hundred thirty billion, thirty-four million, three hundred twenty-three thousand, twenty-one".