81232327 has 4 divisors (see below), whose sum is σ = 88617096. Its totient is φ = 73847560.

The previous prime is 81232247. The next prime is 81232331. The reversal of 81232327 is 72323218.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 81232327 - 2¹⁹ = 80708039 is a prime.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 81232295 and 81232304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81232337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3692368 + ... + 3692389.

It is an arithmetic number, because the mean of its divisors is an integer number (22154274).

Almost surely, 2^81232327 is an apocalyptic number.

81232327 is a deficient number, since it is larger than the sum of its proper divisors (7384769).

81232327 is a wasteful number, since it uses less digits than its factorization.

81232327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7384768.

The product of its digits is 4032, while the sum is 28.

The square root of 81232327 is about 9012.8978136890. The cubic root of 81232327 is about 433.0881472267.

The spelling of 81232327 in words is "eighty-one million, two hundred thirty-two thousand, three hundred twenty-seven".