442287680531 has 2 divisors, whose sum is σ = 442287680532. Its totient is φ = 442287680530.

The previous prime is 442287680423. The next prime is 442287680557. The reversal of 442287680531 is 135086782244.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442287680531 is a prime.

It is a super-2 number, since 2×442287680531² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 442287680531.

It is not a weakly prime, because it can be changed into another prime (442287682531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221143840265 + 221143840266.

It is an arithmetic number, because the mean of its divisors is an integer number (221143840266).

Almost surely, 2^442287680531 is an apocalyptic number.

442287680531 is a deficient number, since it is larger than the sum of its proper divisors (1).

442287680531 is an equidigital number, since it uses as much as digits as its factorization.

442287680531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2580480, while the sum is 50.

The spelling of 442287680531 in words is "four hundred forty-two billion, two hundred eighty-seven million, six hundred eighty thousand, five hundred thirty-one".