42831671 has 2 divisors, whose sum is σ = 42831672. Its totient is φ = 42831670.

The previous prime is 42831661. The next prime is 42831703. The reversal of 42831671 is 17613824.

It is an a-pointer prime, because the next prime (42831703) can be obtained adding 42831671 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42831671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42831631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21415835 + 21415836.

It is an arithmetic number, because the mean of its divisors is an integer number (21415836).

Almost surely, 2^42831671 is an apocalyptic number.

42831671 is a deficient number, since it is larger than the sum of its proper divisors (1).

42831671 is an equidigital number, since it uses as much as digits as its factorization.

42831671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 32.

The square root of 42831671 is about 6544.5909727041. The cubic root of 42831671 is about 349.8820582200.

The spelling of 42831671 in words is "forty-two million, eight hundred thirty-one thousand, six hundred seventy-one".