6342531509 has 2 divisors, whose sum is σ = 6342531510. Its totient is φ = 6342531508.

The previous prime is 6342531499. The next prime is 6342531539. The reversal of 6342531509 is 9051352436.

6342531509 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3259839025 + 3082692484 = 57095^2 + 55522^2 .

It is a cyclic number.

It is not a de Polignac number, because 6342531509 - 2¹⁶ = 6342465973 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6342531539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3171265754 + 3171265755.

It is an arithmetic number, because the mean of its divisors is an integer number (3171265755).

Almost surely, 2^6342531509 is an apocalyptic number.

It is an amenable number.

6342531509 is a deficient number, since it is larger than the sum of its proper divisors (1).

6342531509 is an equidigital number, since it uses as much as digits as its factorization.

6342531509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 38.

The square root of 6342531509 is about 79640.0119851824. The cubic root of 6342531509 is about 1851.0616267512.

The spelling of 6342531509 in words is "six billion, three hundred forty-two million, five hundred thirty-one thousand, five hundred nine".