82331385 has 8 divisors (see below), whose sum is σ = 131730240. Its totient is φ = 43910064.

The previous prime is 82331309. The next prime is 82331407. The reversal of 82331385 is 58313328.

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

It is not a de Polignac number, because 82331385 - 2⁸ = 82331129 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2744365 + ... + 2744394.

It is an arithmetic number, because the mean of its divisors is an integer number (16466280).

Almost surely, 2^82331385 is an apocalyptic number.

It is an amenable number.

82331385 is a deficient number, since it is larger than the sum of its proper divisors (49398855).

82331385 is a wasteful number, since it uses less digits than its factorization.

82331385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5488767.

The product of its digits is 17280, while the sum is 33.

The square root of 82331385 is about 9073.6643645222. The cubic root of 82331385 is about 435.0326042413.

The spelling of 82331385 in words is "eighty-two million, three hundred thirty-one thousand, three hundred eighty-five".