71148811 has 2 divisors, whose sum is σ = 71148812. Its totient is φ = 71148810.

The previous prime is 71148809. The next prime is 71148823. The reversal of 71148811 is 11884117.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71148811 - 2¹ = 71148809 is a prime.

Together with 71148809, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (71148881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35574405 + 35574406.

It is an arithmetic number, because the mean of its divisors is an integer number (35574406).

Almost surely, 2^71148811 is an apocalyptic number.

71148811 is a deficient number, since it is larger than the sum of its proper divisors (1).

71148811 is an equidigital number, since it uses as much as digits as its factorization.

71148811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1792, while the sum is 31.

The square root of 71148811 is about 8434.9754593597. The cubic root of 71148811 is about 414.3708684762.

The spelling of 71148811 in words is "seventy-one million, one hundred forty-eight thousand, eight hundred eleven".