86012731 has 4 divisors (see below), whose sum is σ = 98300272. Its totient is φ = 73725192.

The previous prime is 86012687. The next prime is 86012743. The reversal of 86012731 is 13721068.

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 86012731 - 2⁷ = 86012603 is a prime.

It is a super-2 number, since 2×86012731² = 14796379788156722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 86012731.

It is not an unprimeable number, because it can be changed into a prime (86012431) 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 3 ways as a sum of consecutive naturals, for example, 6143760 + ... + 6143773.

It is an arithmetic number, because the mean of its divisors is an integer number (24575068).

Almost surely, 2^86012731 is an apocalyptic number.

86012731 is a deficient number, since it is larger than the sum of its proper divisors (12287541).

86012731 is a wasteful number, since it uses less digits than its factorization.

86012731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12287540.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 86012731 is about 9274.3048796123. The cubic root of 86012731 is about 441.4222760599.

Adding to 86012731 its reverse (13721068), we get a palindrome (99733799).

The spelling of 86012731 in words is "eighty-six million, twelve thousand, seven hundred thirty-one".