81223014 has 8 divisors (see below), whose sum is σ = 162446040. Its totient is φ = 27074336.

The previous prime is 81222983. The next prime is 81223031. The reversal of 81223014 is 41032218.

It is a sphenic number, since it is the product of 3 distinct primes.

81223014 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6768579 + ... + 6768590.

It is an arithmetic number, because the mean of its divisors is an integer number (20305755).

Almost surely, 2^81223014 is an apocalyptic number.

81223014 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

81223014 is a wasteful number, since it uses less digits than its factorization.

81223014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13537174.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 81223014 is about 9012.3811503953. The cubic root of 81223014 is about 433.0715959176.

The spelling of 81223014 in words is "eighty-one million, two hundred twenty-three thousand, fourteen".