81371114 has 16 divisors (see below), whose sum is σ = 133400736. Its totient is φ = 36918000.

The previous prime is 81371113. The next prime is 81371117. The reversal of 81371114 is 41117318.

It is not an unprimeable number, because it can be changed into a prime (81371111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9764 + ... + 16064.

It is an arithmetic number, because the mean of its divisors is an integer number (8337546).

Almost surely, 2^81371114 is an apocalyptic number.

81371114 is a deficient number, since it is larger than the sum of its proper divisors (52029622).

81371114 is a wasteful number, since it uses less digits than its factorization.

81371114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6901.

The product of its digits is 672, while the sum is 26.

The square root of 81371114 is about 9020.5938828882. The cubic root of 81371114 is about 433.3346533819.

The spelling of 81371114 in words is "eighty-one million, three hundred seventy-one thousand, one hundred fourteen".