81534703 has 6 divisors (see below), whose sum is σ = 86613296. Its totient is φ = 76738272.

The previous prime is 81534683. The next prime is 81534731. The reversal of 81534703 is 30743518.

It is not a de Polignac number, because 81534703 - 2⁵ = 81534671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81534403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 140775 + ... + 141352.

Almost surely, 2^81534703 is an apocalyptic number.

81534703 is a deficient number, since it is larger than the sum of its proper divisors (5078593).

81534703 is a wasteful number, since it uses less digits than its factorization.

81534703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282161 (or 282144 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 81534703 is about 9029.6568594825. The cubic root of 81534703 is about 433.6248519017.

The spelling of 81534703 in words is "eighty-one million, five hundred thirty-four thousand, seven hundred three".