82431087 has 8 divisors (see below), whose sum is σ = 110178480. Its totient is φ = 54818880.

The previous prime is 82431073. The next prime is 82431109. The reversal of 82431087 is 78013428.

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

It is not a de Polignac number, because 82431087 - 2¹⁰ = 82430063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82431007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32364 + ... + 34817.

It is an arithmetic number, because the mean of its divisors is an integer number (13772310).

Almost surely, 2^82431087 is an apocalyptic number.

82431087 is a deficient number, since it is larger than the sum of its proper divisors (27747393).

82431087 is a wasteful number, since it uses less digits than its factorization.

82431087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67593.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 82431087 is about 9079.1567339704. The cubic root of 82431087 is about 435.2081392625.

The spelling of 82431087 in words is "eighty-two million, four hundred thirty-one thousand, eighty-seven".