4323031321 has 12 divisors (see below), whose sum is σ = 5033047332. Its totient is φ = 3702349728.

The previous prime is 4323031291. The next prime is 4323031351. The reversal of 4323031321 is 1231303234.

It is an interprime number because it is at equal distance from previous prime (4323031291) and next prime (4323031351).

It can be written as a sum of positive squares in 2 ways, for example, as 1990141321 + 2332890000 = 44611^2 + 48300^2 .

It is not a de Polignac number, because 4323031321 - 2²⁷ = 4188813593 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4323031292 and 4323031301.

It is not an unprimeable number, because it can be changed into a prime (4323031351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23071 + ... + 95803.

It is an arithmetic number, because the mean of its divisors is an integer number (419420611).

Almost surely, 2^4323031321 is an apocalyptic number.

It is an amenable number.

4323031321 is a deficient number, since it is larger than the sum of its proper divisors (710016011).

4323031321 is a wasteful number, since it uses less digits than its factorization.

4323031321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73960 (or 73953 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 4323031321 is about 65749.7628969109. The cubic root of 4323031321 is about 1629.0314193688.

Adding to 4323031321 its reverse (1231303234), we get a palindrome (5554334555).

The spelling of 4323031321 in words is "four billion, three hundred twenty-three million, thirty-one thousand, three hundred twenty-one".