81234014 has 4 divisors (see below), whose sum is σ = 121851024. Its totient is φ = 40617006.

The previous prime is 81233969. The next prime is 81234029. The reversal of 81234014 is 41043218.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41043218 = 2 ⋅20521609.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20308502 + ... + 20308505.

It is an arithmetic number, because the mean of its divisors is an integer number (30462756).

Almost surely, 2^81234014 is an apocalyptic number.

81234014 is a deficient number, since it is larger than the sum of its proper divisors (40617010).

81234014 is a wasteful number, since it uses less digits than its factorization.

81234014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40617009.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 81234014 is about 9012.9914013051. The cubic root of 81234014 is about 433.0911452723.

The spelling of 81234014 in words is "eighty-one million, two hundred thirty-four thousand, fourteen".