81298343 has 8 divisors (see below), whose sum is σ = 94665888. Its totient is φ = 68369184.

The previous prime is 81298313. The next prime is 81298351. The reversal of 81298343 is 34389218.

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 81298343 - 2¹⁰ = 81297319 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 = 81298297 and 81298306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81298313) 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 7 ways as a sum of consecutive naturals, for example, 109196 + ... + 109937.

It is an arithmetic number, because the mean of its divisors is an integer number (11833236).

Almost surely, 2^81298343 is an apocalyptic number.

81298343 is a deficient number, since it is larger than the sum of its proper divisors (13367545).

81298343 is a wasteful number, since it uses less digits than its factorization.

81298343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219193.

The product of its digits is 41472, while the sum is 38.

The square root of 81298343 is about 9016.5593770573. The cubic root of 81298343 is about 433.2054363513.

The spelling of 81298343 in words is "eighty-one million, two hundred ninety-eight thousand, three hundred forty-three".