1031985 has 48 divisors (see below), whose sum is σ = 2021760. Its totient is φ = 483840.

The previous prime is 1031981. The next prime is 1031999. The reversal of 1031985 is 5891301.

It is not a de Polignac number, because 1031985 - 2² = 1031981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1031981) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14500 + ... + 14570.

It is an arithmetic number, because the mean of its divisors is an integer number (42120).

2^1031985 is an apocalyptic number.

1031985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1031985 is a deficient number, since it is larger than the sum of its proper divisors (989775).

1031985 is a wasteful number, since it uses less digits than its factorization.

1031985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 1031985 is about 1015.8666251039. The cubic root of 1031985 is about 101.0549973319.

It can be divided in two parts, 10319 and 85, that added together give a square (10404 = 102²).

The spelling of 1031985 in words is "one million, thirty-one thousand, nine hundred eighty-five".