4343311321 has 2 divisors, whose sum is σ = 4343311322. Its totient is φ = 4343311320.

The previous prime is 4343311243. The next prime is 4343311333. The reversal of 4343311321 is 1231133434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2781085696 + 1562225625 = 52736^2 + 39525^2 .

It is a cyclic number.

It is not a de Polignac number, because 4343311321 - 2¹¹ = 4343309273 is a prime.

It is a super-2 number, since 2×4343311321² = 37728706462253530082, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4343312321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2171655660 + 2171655661.

It is an arithmetic number, because the mean of its divisors is an integer number (2171655661).

Almost surely, 2^4343311321 is an apocalyptic number.

It is an amenable number.

4343311321 is a deficient number, since it is larger than the sum of its proper divisors (1).

4343311321 is an equidigital number, since it uses as much as digits as its factorization.

4343311321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 25.

The square root of 4343311321 is about 65903.8035397047. The cubic root of 4343311321 is about 1631.5747914300.

Adding to 4343311321 its reverse (1231133434), we get a palindrome (5574444755).

The spelling of 4343311321 in words is "four billion, three hundred forty-three million, three hundred eleven thousand, three hundred twenty-one".