86311915 has 8 divisors (see below), whose sum is σ = 104993568. Its totient is φ = 68103360.

The previous prime is 86311913. The next prime is 86311919. The reversal of 86311915 is 51911368.

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

It is not a de Polignac number, because 86311915 - 2¹ = 86311913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86311913) 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, 117871 + ... + 118600.

It is an arithmetic number, because the mean of its divisors is an integer number (13124196).

Almost surely, 2^86311915 is an apocalyptic number.

86311915 is a deficient number, since it is larger than the sum of its proper divisors (18681653).

86311915 is a wasteful number, since it uses less digits than its factorization.

86311915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236549.

The product of its digits is 6480, while the sum is 34.

The square root of 86311915 is about 9290.4206040416. The cubic root of 86311915 is about 441.9334936073.

The spelling of 86311915 in words is "eighty-six million, three hundred eleven thousand, nine hundred fifteen".