42351535531 has 2 divisors, whose sum is σ = 42351535532. Its totient is φ = 42351535530.

The previous prime is 42351535529. The next prime is 42351535543. The reversal of 42351535531 is 13553515324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42351535531 - 2¹ = 42351535529 is a prime.

It is a super-2 number, since 2×42351535531² (a number of 22 digits) contains 22 as substring.

Together with 42351535529, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (42351535561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21175767765 + 21175767766.

It is an arithmetic number, because the mean of its divisors is an integer number (21175767766).

Almost surely, 2^42351535531 is an apocalyptic number.

42351535531 is a deficient number, since it is larger than the sum of its proper divisors (1).

42351535531 is an equidigital number, since it uses as much as digits as its factorization.

42351535531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 135000, while the sum is 37.

The spelling of 42351535531 in words is "forty-two billion, three hundred fifty-one million, five hundred thirty-five thousand, five hundred thirty-one".