322143421 has 8 divisors (see below), whose sum is σ = 344927160. Its totient is φ = 299785728.

The previous prime is 322143377. The next prime is 322143431. The reversal of 322143421 is 124341223.

It can be written as a sum of positive squares in 4 ways, for example, as 4056196 + 318087225 = 2014^2 + 17835^2 .

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 322143421 - 2²¹ = 320046269 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 322143392 and 322143401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (322143431) 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, 104946 + ... + 107971.

It is an arithmetic number, because the mean of its divisors is an integer number (43115895).

Almost surely, 2^322143421 is an apocalyptic number.

It is an amenable number.

322143421 is a deficient number, since it is larger than the sum of its proper divisors (22783739).

322143421 is a wasteful number, since it uses less digits than its factorization.

322143421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213023.

The product of its digits is 1152, while the sum is 22.

The square root of 322143421 is about 17948.3542699602. The cubic root of 322143421 is about 685.5141475338.

Adding to 322143421 its reverse (124341223), we get a palindrome (446484644).

The spelling of 322143421 in words is "three hundred twenty-two million, one hundred forty-three thousand, four hundred twenty-one".