86131547 has 6 divisors (see below), whose sum is σ = 89000604. Its totient is φ = 83352180.

The previous prime is 86131531. The next prime is 86131601. The reversal of 86131547 is 74513168.

It is not a de Polignac number, because 86131547 - 2⁴ = 86131531 is a prime.

It is a super-2 number, since 2×86131547² = 14837286777226418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86131517) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43853 + ... + 45774.

It is an arithmetic number, because the mean of its divisors is an integer number (14833434).

Almost surely, 2^86131547 is an apocalyptic number.

86131547 is a deficient number, since it is larger than the sum of its proper divisors (2869057).

86131547 is an equidigital number, since it uses as much as digits as its factorization.

86131547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89689 (or 89658 counting only the distinct ones).

The product of its digits is 20160, while the sum is 35.

The square root of 86131547 is about 9280.7083242606. The cubic root of 86131547 is about 441.6254393858.

The spelling of 86131547 in words is "eighty-six million, one hundred thirty-one thousand, five hundred forty-seven".