86097831 has 4 divisors (see below), whose sum is σ = 114797112. Its totient is φ = 57398552.

The previous prime is 86097793. The next prime is 86097841. The reversal of 86097831 is 13879068.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 86097831 - 2¹⁴ = 86081447 is a prime.

It is a super-3 number, since 3×86097831³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86097841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14349636 + ... + 14349641.

It is an arithmetic number, because the mean of its divisors is an integer number (28699278).

Almost surely, 2^86097831 is an apocalyptic number.

86097831 is a deficient number, since it is larger than the sum of its proper divisors (28699281).

86097831 is a wasteful number, since it uses less digits than its factorization.

86097831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28699280.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 86097831 is about 9278.8916902828. The cubic root of 86097831 is about 441.5678074375.

The spelling of 86097831 in words is "eighty-six million, ninety-seven thousand, eight hundred thirty-one".