81014 has 4 divisors (see below), whose sum is σ = 121524. Its totient is φ = 40506.

The previous prime is 81013. The next prime is 81017. The reversal of 81014 is 41018.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41018 = 2 ⋅20509.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 81014.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 81014.

It is not an unprimeable number, because it can be changed into a prime (81013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20252 + ... + 20255.

It is an arithmetic number, because the mean of its divisors is an integer number (30381).

2⁸¹⁰¹⁴ is an apocalyptic number.

81014 is a deficient number, since it is larger than the sum of its proper divisors (40510).

81014 is a wasteful number, since it uses less digits than its factorization.

81014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40509.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 81014 is about 284.6295838454. The cubic root of 81014 is about 43.2699797427.

The spelling of 81014 in words is "eighty-one thousand, fourteen".