1671243071 has 2 divisors, whose sum is σ = 1671243072. Its totient is φ = 1671243070.

The previous prime is 1671243053. The next prime is 1671243073. The reversal of 1671243071 is 1703421761.

It is a strong prime.

It is an emirp because it is prime and its reverse (1703421761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1671243071 - 2¹⁰ = 1671242047 is a prime.

It is a super-2 number, since 2×1671243071² = 5586106804731022082, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 1671243073, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1671243073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 835621535 + 835621536.

It is an arithmetic number, because the mean of its divisors is an integer number (835621536).

Almost surely, 2^1671243071 is an apocalyptic number.

1671243071 is a deficient number, since it is larger than the sum of its proper divisors (1).

1671243071 is an equidigital number, since it uses as much as digits as its factorization.

1671243071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 1671243071 is about 40880.8399008631. The cubic root of 1671243071 is about 1186.7152952217.

The spelling of 1671243071 in words is "one billion, six hundred seventy-one million, two hundred forty-three thousand, seventy-one".