1085731 has 6 divisors (see below), whose sum is σ = 1125332. Its totient is φ = 1047480.

The previous prime is 1085719. The next prime is 1085737. The reversal of 1085731 is 1375801.

It is not a de Polignac number, because 1085731 - 2¹³ = 1077539 is a prime.

It is a super-2 number, since 2×1085731² = 2357623608722, 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 = 1085696 and 1085705.

It is not an unprimeable number, because it can be changed into a prime (1085737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 196 + ... + 1486.

2^1085731 is an apocalyptic number.

1085731 is a deficient number, since it is larger than the sum of its proper divisors (39601).

1085731 is an equidigital number, since it uses as much as digits as its factorization.

1085731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349 (or 1320 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 1085731 is about 1041.9841649469. The cubic root of 1085731 is about 102.7797158523.

The spelling of 1085731 in words is "one million, eighty-five thousand, seven hundred thirty-one".