42331030309 has 2 divisors, whose sum is σ = 42331030310. Its totient is φ = 42331030308.

The previous prime is 42331030307. The next prime is 42331030433. The reversal of 42331030309 is 90303013324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39093989284 + 3237041025 = 197722^2 + 56895^2 .

It is a cyclic number.

It is not a de Polignac number, because 42331030309 - 2¹ = 42331030307 is a prime.

It is a super-2 number, since 2×42331030309² (a number of 22 digits) contains 22 as substring.

Together with 42331030307, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42331030303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21165515154 + 21165515155.

It is an arithmetic number, because the mean of its divisors is an integer number (21165515155).

Almost surely, 2^42331030309 is an apocalyptic number.

It is an amenable number.

42331030309 is a deficient number, since it is larger than the sum of its proper divisors (1).

42331030309 is an equidigital number, since it uses as much as digits as its factorization.

42331030309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 28.

The spelling of 42331030309 in words is "forty-two billion, three hundred thirty-one million, thirty thousand, three hundred nine".