71190971 has 2 divisors, whose sum is σ = 71190972. Its totient is φ = 71190970.

The previous prime is 71190943. The next prime is 71190989. The reversal of 71190971 is 17909117.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (17909117) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71190971 - 2⁶ = 71190907 is a prime.

It is not a weakly prime, because it can be changed into another prime (71190901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35595485 + 35595486.

It is an arithmetic number, because the mean of its divisors is an integer number (35595486).

Almost surely, 2^71190971 is an apocalyptic number.

71190971 is a deficient number, since it is larger than the sum of its proper divisors (1).

71190971 is an equidigital number, since it uses as much as digits as its factorization.

71190971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3969, while the sum is 35.

The square root of 71190971 is about 8437.4742073680. The cubic root of 71190971 is about 414.4526989667.

The spelling of 71190971 in words is "seventy-one million, one hundred ninety thousand, nine hundred seventy-one".