86130731 has 4 divisors (see below), whose sum is σ = 86208552. Its totient is φ = 86052912.

The previous prime is 86130727. The next prime is 86130773. The reversal of 86130731 is 13703168.

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 86130731 - 2² = 86130727 is a prime.

It is a super-2 number, since 2×86130731² = 14837005645188722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 86130694 and 86130703.

It is not an unprimeable number, because it can be changed into a prime (86130701) 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, 37226 + ... + 39471.

It is an arithmetic number, because the mean of its divisors is an integer number (21552138).

Almost surely, 2^86130731 is an apocalyptic number.

86130731 is a deficient number, since it is larger than the sum of its proper divisors (77821).

86130731 is a wasteful number, since it uses less digits than its factorization.

86130731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77820.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 86130731 is about 9280.6643619948. The cubic root of 86130731 is about 441.6240447458.

Adding to 86130731 its reverse (13703168), we get a palindrome (99833899).

The spelling of 86130731 in words is "eighty-six million, one hundred thirty thousand, seven hundred thirty-one".