81342327 has 8 divisors (see below), whose sum is σ = 118316160. Its totient is φ = 49298360.

The previous prime is 81342307. The next prime is 81342337. The reversal of 81342327 is 72324318.

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

It is a cyclic number.

It is not a de Polignac number, because 81342327 - 2¹¹ = 81340279 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 81342294 and 81342303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81342307) 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 7 ways as a sum of consecutive naturals, for example, 1232427 + ... + 1232492.

It is an arithmetic number, because the mean of its divisors is an integer number (14789520).

Almost surely, 2^81342327 is an apocalyptic number.

81342327 is a deficient number, since it is larger than the sum of its proper divisors (36973833).

81342327 is a wasteful number, since it uses less digits than its factorization.

81342327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2464933.

The product of its digits is 8064, while the sum is 30.

The square root of 81342327 is about 9018.9981150902. The cubic root of 81342327 is about 433.2835464826.

Subtracting from 81342327 its reverse (72324318), we obtain a square (9018009 = 3003²).

It can be divided in two parts, 813423 and 27, that added together give a triangular number (813450 = T₁₂₇₅).

The spelling of 81342327 in words is "eighty-one million, three hundred forty-two thousand, three hundred twenty-seven".