81412303 has 16 divisors (see below), whose sum is σ = 99995904. Its totient is φ = 64690560.

The previous prime is 81412291. The next prime is 81412307. The reversal of 81412303 is 30321418.

It is a cyclic number.

It is not a de Polignac number, because 81412303 - 2¹³ = 81404111 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81412307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2868 + ... + 13078.

It is an arithmetic number, because the mean of its divisors is an integer number (6249744).

Almost surely, 2^81412303 is an apocalyptic number.

81412303 is a deficient number, since it is larger than the sum of its proper divisors (18583601).

81412303 is a wasteful number, since it uses less digits than its factorization.

81412303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10302.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 81412303 is about 9022.8766477216. The cubic root of 81412303 is about 433.4077571712.

The spelling of 81412303 in words is "eighty-one million, four hundred twelve thousand, three hundred three".