81410371 has 8 divisors (see below), whose sum is σ = 96041984. Its totient is φ = 67529160.

The previous prime is 81410333. The next prime is 81410393. The reversal of 81410371 is 17301418.

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

It is not a de Polignac number, because 81410371 - 2⁹ = 81409859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81410321) 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, 187365 + ... + 187798.

It is an arithmetic number, because the mean of its divisors is an integer number (12005248).

Almost surely, 2^81410371 is an apocalyptic number.

81410371 is a deficient number, since it is larger than the sum of its proper divisors (14631613).

81410371 is a wasteful number, since it uses less digits than its factorization.

81410371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375201.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 81410371 is about 9022.7695858866. The cubic root of 81410371 is about 433.4043287360.

Adding to 81410371 its reverse (17301418), we get a palindrome (98711789).

The spelling of 81410371 in words is "eighty-one million, four hundred ten thousand, three hundred seventy-one".