86843031 has 12 divisors (see below), whose sum is σ = 127274616. Its totient is φ = 52631920.

The previous prime is 86843027. The next prime is 86843039. The reversal of 86843031 is 13034868.

It is not a de Polignac number, because 86843031 - 2² = 86843027 is a prime.

It is a super-2 number, since 2×86843031² = 15083424066533922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 86842983 and 86843001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86843039) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 119256 + ... + 119981.

It is an arithmetic number, because the mean of its divisors is an integer number (10606218).

Almost surely, 2^86843031 is an apocalyptic number.

86843031 is a deficient number, since it is larger than the sum of its proper divisors (40431585).

86843031 is a wasteful number, since it uses less digits than its factorization.

86843031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239262 (or 239251 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 86843031 is about 9318.9608326251. The cubic root of 86843031 is about 442.8381124224.

Adding to 86843031 its reverse (13034868), we get a palindrome (99877899).

The spelling of 86843031 in words is "eighty-six million, eight hundred forty-three thousand, thirty-one".