4340021531 has 2 divisors, whose sum is σ = 4340021532. Its totient is φ = 4340021530.

The previous prime is 4340021527. The next prime is 4340021557. The reversal of 4340021531 is 1351200434.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4340021531 - 2² = 4340021527 is a prime.

It is a super-2 number, since 2×4340021531² = 37671573779087167922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4340021497 and 4340021506.

It is not a weakly prime, because it can be changed into another prime (4340029531) 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 as a sum of consecutive naturals, namely, 2170010765 + 2170010766.

It is an arithmetic number, because the mean of its divisors is an integer number (2170010766).

Almost surely, 2^4340021531 is an apocalyptic number.

4340021531 is a deficient number, since it is larger than the sum of its proper divisors (1).

4340021531 is an equidigital number, since it uses as much as digits as its factorization.

4340021531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 4340021531 is about 65878.8397818298. The cubic root of 4340021531 is about 1631.1627483443.

Adding to 4340021531 its reverse (1351200434), we get a palindrome (5691221965).

The spelling of 4340021531 in words is "four billion, three hundred forty million, twenty-one thousand, five hundred thirty-one".