81410223 has 16 divisors (see below), whose sum is σ = 111415040. Its totient is φ = 52847424.

The previous prime is 81410209. The next prime is 81410227. The reversal of 81410223 is 32201418.

It is not a de Polignac number, because 81410223 - 2⁴ = 81410207 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 81410223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81410227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51990 + ... + 53532.

It is an arithmetic number, because the mean of its divisors is an integer number (6963440).

Almost surely, 2^81410223 is an apocalyptic number.

81410223 is a deficient number, since it is larger than the sum of its proper divisors (30004817).

81410223 is a wasteful number, since it uses less digits than its factorization.

81410223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1998.

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

The square root of 81410223 is about 9022.7613844100. The cubic root of 81410223 is about 433.4040661000.

The spelling of 81410223 in words is "eighty-one million, four hundred ten thousand, two hundred twenty-three".