1031385 has 16 divisors (see below), whose sum is σ = 1707840. Its totient is φ = 530880.

The previous prime is 1031357. The next prime is 1031399. The reversal of 1031385 is 5831301.

It is a happy number.

It is not a de Polignac number, because 1031385 - 2⁹ = 1030873 is a prime.

1031385 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 751 + ... + 1620.

It is an arithmetic number, because the mean of its divisors is an integer number (106740).

2^1031385 is an apocalyptic number.

1031385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1031385 is a deficient number, since it is larger than the sum of its proper divisors (676455).

1031385 is a wasteful number, since it uses less digits than its factorization.

1031385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2408.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1031385 is about 1015.5712678094. The cubic root of 1031385 is about 101.0354089487.

Adding to 1031385 its reverse (5831301), we get a palindrome (6862686).

The spelling of 1031385 in words is "one million, thirty-one thousand, three hundred eighty-five".