82431085 has 16 divisors (see below), whose sum is σ = 109029312. Its totient is φ = 59328000.

The previous prime is 82431073. The next prime is 82431109. The reversal of 82431085 is 58013428.

It is not a de Polignac number, because 82431085 - 2⁵ = 82431053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2391 + ... + 13060.

It is an arithmetic number, because the mean of its divisors is an integer number (6814332).

Almost surely, 2^82431085 is an apocalyptic number.

It is an amenable number.

82431085 is a deficient number, since it is larger than the sum of its proper divisors (26598227).

82431085 is a wasteful number, since it uses less digits than its factorization.

82431085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15564.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 82431085 is about 9079.1566238280. The cubic root of 82431085 is about 435.2081357427.

The spelling of 82431085 in words is "eighty-two million, four hundred thirty-one thousand, eighty-five".