1086831 has 8 divisors (see below), whose sum is σ = 1610160. Its totient is φ = 724536.

The previous prime is 1086817. The next prime is 1086859. The reversal of 1086831 is 1386801.

It is not a de Polignac number, because 1086831 - 2⁷ = 1086703 is a prime.

It is a super-2 number, since 2×1086831² = 2362403245122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 40253 = 1086831 / (1 + 0 + 8 + 6 + 8 + 3 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 1086795 and 1086804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1086881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20100 + ... + 20153.

It is an arithmetic number, because the mean of its divisors is an integer number (201270).

2^1086831 is an apocalyptic number.

1086831 is a deficient number, since it is larger than the sum of its proper divisors (523329).

1086831 is an equidigital number, since it uses as much as digits as its factorization.

1086831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40262 (or 40256 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 1086831 is about 1042.5118704360. The cubic root of 1086831 is about 102.8144142960.

The spelling of 1086831 in words is "one million, eighty-six thousand, eight hundred thirty-one".