321121343 has 8 divisors (see below), whose sum is σ = 338534400. Its totient is φ = 304149240.

The previous prime is 321121309. The next prime is 321121351. The reversal of 321121343 is 343121123.

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 321121343 - 2¹⁶ = 321055807 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 (321121643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108743 + ... + 111656.

It is an arithmetic number, because the mean of its divisors is an integer number (42316800).

Almost surely, 2^321121343 is an apocalyptic number.

321121343 is a deficient number, since it is larger than the sum of its proper divisors (17413057).

321121343 is a wasteful number, since it uses less digits than its factorization.

321121343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220477.

The product of its digits is 432, while the sum is 20.

The square root of 321121343 is about 17919.8589001141. The cubic root of 321121343 is about 684.7883929114.

Adding to 321121343 its reverse (343121123), we get a palindrome (664242466).

The spelling of 321121343 in words is "three hundred twenty-one million, one hundred twenty-one thousand, three hundred forty-three".